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  1. On British wild flowers considered in relation to insects.
    By: Lubbock, John,
    Edition: 2d ed.
    Publication info: London,Macmillan and Co.,1875.
    Contributed by: Cornell University Library
    Subjects: Color  Fertilization of plants by insects  Flowers  Plants  Variation  
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  2. Correspondence : Meehan (Thomas) and Engelmann (George), 1859-1883.
    By: Meehan, Thomas,
    Contributed by: Missouri Botanical Garden, Peter H. Raven Library
    Subjects: (1827-1901)  (Aubrey Henry)  (Charles Eastwick)  (George Washington),  (Joseph Hinson),  (Thomas Conrad),  (William St. Julian)  1786-1859  1799-1865  1800-1889  1806-1893  1809-1884  1810-1888  1811-1875  1812-1878  1813-1887  1814-1875  1815-1891  1815-1895  1816-1893  1817-1893  1820-1883  1820-1900  1822-1901  1824-1909  1826-1901  1829-1903  1832-1904  1838-1888  1839-1922  1840-1913  Bark  Beecher, Henry Ward,  Breeding  Burk, Issac,  Candolle, Alphonse de,  Correspondence  Ecology  Embryos  Engelmann, George,  Fertilization of plants  Gramineae  Gray, Asa,  Growth  Growth (Plants)  Hoopes, Josiah,  Lapham, Increase Allen,  Letterman, George W  Letters  Lindley, John,  Mazyck, W. St. J  Meehan, Thomas,  Mellichamp, J. H  Murray, Andrew,  Nuttall, Thomas,  Parker, Charles F  Pinaceae  Pinus  Plants  Plants, Flowering of  Porter, Thomas C  Prang, Louis,  Redfield, John Howard,  Rothrock, Joseph T.,  Schott, Arthur,  Shaw, Henry,  Smith, Aubrey H  Smith, Charles E  Spruce, Richard,  Trees  Tryon, George W  Variation  Wood  
    BHL Collections: Engelmann Papers, Missouri Botanical Garden
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  3. De generis humani varietate nativa.
    By: Blumenbach, Johann Friedrich, - Banks, Joseph,
    Edition: Ed. 3. Praemissa est epistola ad ... Josephum Banks ...
    Publication info: Gottingae :Vandenhoek et Ruprecht,1795.
    Contributed by: West Virginia University Libraries (archive.org)
    Subjects: Anatomy  Anthropology  Genetic Variation  Human anatomy  Variation  Variation (Biology)  
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  4. Defective inheritance-ratios in Bursa hybrids. By Dr. George Harrison Shull ...
    By: Shull, George Harrison,
    Publication info: Brünn,1912
    Contributed by: University of California Libraries (archive.org)
    Subjects: Hybridization, Vegetable  Plants  Variation  
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  5. The different forms of flowers on plants of the same species /by Charles Darwin.
    By: Darwin, Charles,
    Publication info: New York : D. Appleton, [19--]
    Contributed by: Missouri Botanical Garden, Peter H. Raven Library
    Subjects: Fertilization of plants  Heterostylism  Plants  Variation  
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  6. The different forms of flowers on plants of the same species / by Charles Darwin.
    By: Darwin, Charles,
    Publication info: New York :D. Appleton,1897.
    Contributed by: Kelly - University of Toronto (archive.org)
    Subjects: Fertilization of plants  Heterostylism  Plants  Variation  
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  7. The different forms of flowers on plants of the same species, by Charles Darwin.
    By: Darwin, Charles,
    Publication info: New York,D. Appleton and company,1897.
    Contributed by: Boston College Libraries (archive.org)
    Subjects: Fertilization of plants  Heterostylism  Plants  Variation  
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  8. The different forms of flowers on plants of the same species, by Charles Darwin.
    By: Darwin, Charles,
    Publication info: New York :D. Appleton and company,1899.
    Contributed by: University of California Libraries (archive.org)
    Subjects: Fertilization of plants  Heterostylism  Plants  Variation  
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  9. The different forms of flowers on plants of the same species.
    By: Darwin, Charles,
    Publication info: New York,D. Appleton,1903.
    Contributed by: Cornell University Library
    Subjects: Fertilization of plants  Plants  Variation  
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  10. The different forms of flowers on plants of the same species.
    By: Darwin, Charles,
    Publication info: New York :D. Appleton,1893.
    Contributed by: Cornell University Library
    Subjects: Fertilization of plants  Plants  Variation  
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  11. The different forms of flowers on plants of the same species.
    By: Darwin, Charles,
    Publication info: London,J. Murray[1884]
    Contributed by: Cornell University Library
    Subjects: Fertilization of plants  Plants  Variation  
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  12. The different forms of flowers on plants of the same species.
    By: Darwin, Charles,
    Publication info: New York,D. Appleton,1896.
    Contributed by: Cornell University Library
    Subjects: Fertilization of plants  Plants  Variation  
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  13. The effects of cross and self fertilisation in the vegetable kingdom.
    By: Darwin, Charles,
    Edition: 2D ed.
    Publication info: LondonJ. Murray1916
    Contributed by: Earth Sciences - University of Toronto (archive.org)
    Subjects: Fertilization of plants  Plants  Variation  
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  14. The effects of cross and self fertilisation in the vegetable kingdom /
    By: Darwin, Charles,
    Publication info: New York :D. Appleton,1892.
    Contributed by: University of Connecticut Libraries (archive.org)
    Subjects: Fertilization of plants  Plants  Variation  
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  15. The effects of cross and self fertilisation in the vegetable kingdom / by Charles Darwin.
    By: Darwin, Charles,
    Edition: 2d. ed. 5th impression
    Publication info: London :J. Murray,1900.
    Contributed by: University of California Libraries (archive.org)
    Subjects: Fertilization of plants  Plants  Variation  
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  16. Evolution of the colors of North American land birds / by Charles A. Keeler.
    By: Keeler, Charles Augustus,
    Publication info: San Francisco :California Academy of Sciences,1893.
    Contributed by: Smithsonian Libraries
    Subjects: Animals  Birds  California  Color  Heredity  Variation  
    BHL Collections: Smithsonian Libraries
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  17. Evolution of the colors of North American land birds,
    By: Keeler, Charles Augustus, - Scheerman, J. G. - California Academy of Sciences.
    Publication info: San Francisco, California,Academy of Sciences,1893.
    Contributed by: Cornell University Library
    Subjects: 1893  Animals  Birds  California  Color  Heredity  Variation  
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  18. Evolution of the colors of North American Land Birds, by Charles A. Keeler.
    By: Keeler, Charles Augustus,
    Publication info: San Francisco,California academy of sciences,1893.
    Contributed by: University of California Libraries (archive.org)
    Subjects: Animals  Birds  California  Color  Heredity  Variation  
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  19. Geographic variation among brown and grizzly bears (Ursus arctos) in North America / by E. Raymond Hall.
    By: Hall, E. Raymond - University of Kansas.
    Publication info: Lawrence :University of Kansas :1984.
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
    Subjects: Brown bear  Grizzly bear  Mammals  mcz  North America  Ursus arctos  Variation  
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
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  20. Geographic variation in Bufo valliceps (Anura: Bufonidae), a widespread toad in the United States and Middle America / by Joseph R. Mendelson III.
    By: Mendelson, Joseph R. - University of Kansas.
    Publication info: Lawrence, Kan. :Natural History Museum, The University of Kansas,[1998]
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
    Subjects: Bufonidae  Geographical distribution  Toads  Variation  
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
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  21. Geographic variation in slash pine (Pinus elliottii Engelm.) / by Anthony E. Squillace.
    By: Squillace, Anthony E.,
    Publication info: 1964.
    Contributed by: University of Florida, George A. Smathers Libraries (archive.org)
    Subjects: Botany  Botany thesis Ph. D  Dissertations, Academic  Plants  Slash pine  UF  Variation  
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  22. Geographical variation in the canary, Serinus sulphuratus [by] Austin L. Rand.
    By: Rand, Austin Loomer,
    Publication info: [Chicago]Field Museum of Natural History,1968.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Africa  Birds  Serinus sulphuratus  Variation  
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  23. Gruppenweise Artbildung unter spezieller Berücksichtigung der Gattung Oenothera.
    By: Vries, Hugo de,
    Publication info: BerlinGebr. Borntraeger1913
    Contributed by: Gerstein - University of Toronto (archive.org)
    Subjects: Oenothera  Plants  Variation  
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  24. Illustrirtes Mustertauben-Buch : enthaltend das Gesammte der Taubenzucht /
    By: Prütz, Gustav. - Förster, Christian.
    Publication info: Hamburg :Druck und Verlag von J.F. Richter,[1884-1886]
    Contributed by: Smithsonian Libraries
    Subjects: Anatomy  Pictorial works  Pigeons  Variation  
    BHL Collections: Smithsonian Libraries
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  25. Intraspecific and interspecific variation in the Cryptotis nigrescens species complex of small-eared shrews (Insectivora, Soricidae) : with the description of a new species from Colombia / Neal Woodman, Robert M. Timm.
    By: Woodman, Neal. - Timm, Robert M. - Field Museum of Natural History.
    Publication info: [Chicago, Ill.] :Field Museum of Natural History,c1993.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Classification  Cryptotis  Variation  
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  26. Is species a natural or artificial division in nature? a paper read before the Biological Section of the Hamilton Association, December 7th, 1888 /
    By: Moffat, J. Alston. - Hamilton Association.
    Publication info: Hamilton, Ont.? :s.n.,1888?
    Contributed by: Canadiana.org (archive.org)
    Subjects: Species  Variation  Zoology  
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  27. Kangaroo rats : intraspecific variation in Dipodomys spectabilis Merriam and Dipodomys deserti Stephens /
    By: Nader, Iyad A.,
    Publication info: Urbana :University of Illinois Press,c1978.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Desert kangaroo rat  Dipodomys spectabilis  Variation  Zoology  
    View Book
  28. Miscellaneous studies in agriculture and biology.
    By: University of California (1868-1952) - Bioletti, Frederic T. - Cruess, W. V. - Davi, Horace Denan, - Frost, Howard Brett, - McEwen, George Francis. - Swain, Albert Free,
    Publication info: Berkeley,University of California Press,1919.
    Contributed by: Library of Congress
    Subjects: Aphids  Grapes  Matthiola  Ocean temperature  Plants  Variation  
    BHL Collections: Library of Congress
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  29. Mutants and hybrids of the oenotheras. By D. T. Macdougal, assisted by A. M. Vail, G. H. Shull and J. K. Small.
    By: MacDougal, Daniel Trembly, - Shull, George Harrison, - Small, John Kunkel, - Vail, Anna Murray.
    Publication info: Washington, D.C.,The Carnegie Institution,1905.
    Contributed by: University of California Libraries (archive.org)
    Subjects: Hybridization, Vegetable  Oenothera  Plants  Variation  
    View Book
  30. Mutants and hybrids of the oenotheras. By D. T. Macdougal, assisted by A. M. Vail, G. H. Shull and J. K. Small.
    By: MacDougal, Daniel Trembly, - Shull, George Harrison, - Small, John Kunkel, - Vail, Anna Murray.
    Publication info: Washington, D.C.,Carnegie Institution,1905.
    Contributed by: NCSU Libraries (archive.org)
    Subjects: Oenothera  Plant hybridization  Plants  Variation  
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  31. Mutation in Matthiola,
    By: Frost, Howard Brett,
    Publication info: Berkeley,University of California press,1919.
    Contributed by: University of California, Davis Libraries (archive.org)
    Subjects: Matthiola  Plants  Variation  
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  32. The mutation theory; experiments and observations on the origin of species in the vegetable kingdom, by Hugo de Vries ... tr. by Prof. J. B. Farmer and A. D. Darbishire ...
    By: Vries, Hugo de, - Darbishire, A. D. - Farmer, J. B.
    Publication info: Chicago,Open Court Publishing Company; [etc., etc.]1909-10.
    Contributed by: MBLWHOI Library
    Subjects: Evolution  Evolution (Biology)  Hybridization, Vegetable  Plants  Variation  
    BHL Collections: MBLWHOI Library, Woods Hole
    View Book
  33. The mutation theory; experiments and observations on the origin of species in the vegetable kingdom, by Hugo de Vries. Tr. by J. B. Farmer and A. D. Darbishire.
    By: Vries, Hugo de, - Darbishire, A. D. - Farmer, J. B.
    Publication info: Chicago,Open Court Pub. Co.,1909-10.
    Contributed by: NCSU Libraries (archive.org)
    Subjects: Evolution  Plant hybridization  Plants  Variation  
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  34. Mutations, variations, and relationships of the oenotheras,
    By: MacDougal, Daniel Trembly, - Shull, George Harrison, - Vall, Anna Murray
    Publication info: Washington, D.C.Carnegie Institution of Washington1907
    Contributed by: Gerstein - University of Toronto (archive.org)
    Subjects: Oenothera  Plants  Variation  
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  35. Mutations, variations, and relationships of the oenotheras, by D.T. MacDougal, A. M. Vail, and G. H. Shull.
    By: MacDougal, Daniel Trembly, - Shull, George Harrison, - Vail, Anna Murray.
    Publication info: Washington, D.C.,Carnegie Institution of Washington,1907.
    Contributed by: NCSU Libraries (archive.org)
    Subjects: Oenothera  Plants  Variation  
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  36. Die mutationstheorie. Versuche und beobachtungen über die entstehung von arten im pflanzenreich, von Hugo de Vries.
    By: Vries, Hugo de,
    Publication info: Leipzig,Veit & comp.,1901-03.
    Contributed by: MBLWHOI Library
    Subjects: Evolution  Evolution (Biology)  Hybridization, Vegetable  Plants  Variation  
    BHL Collections: MBLWHOI Library, Woods Hole
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  37. On British wild flowers considered in relation to insects / by Lord Avebury.
    By: Lubbock, John,
    Publication info: London :Macmillan,1909.
    Contributed by: University of California Libraries (archive.org)
    Subjects: Color  Fertilization of plants by insects  Flowers  Plants  Variation  
    View Book
  38. The origin of floral structures : through insect and other agencies.
    By: Henslow, George,
    Publication info: New York :Appleton,1888.
    Contributed by: Cornell University Library
    Subjects: Fertilization  Flowers  Morphology  Plants  Variation  
    View Book
  39. Phases of animal life, past and present, by R. Lydekker
    By: Lydekker, Richard,
    Publication info: and New York,Longmans, Green, and Co.,1892
    Contributed by: University of California Libraries (archive.org)
    Subjects: Animals  Paleontology  Variation  
    View Book
  40. Recent progress in the study of variation, heredity, and evolution, rev. by Leonard Doncaster, biographical note by Bella Sidney Woolf (Mrs. R.H. Lock)
    By: Lock, Robert Heath,
    Publication info: London,Murray,1920.
    Contributed by: Gerstein - University of Toronto (archive.org)
    Subjects: Evolution  Heredity  Variation  
    View Book
  41. Selection and cross-breeding in relation to the inheritance of coat-pigments and coat-patterns in rats and guinea-pigs,
    By: MacCurdy, Hansford. - Castle, William E.
    Publication info: Washington, D. C.,Carnegie institution of Washington,1907.
    Contributed by: Cornell University Library
    Subjects: Guinea pigs  Rats  Variation  
    View Book
  42. Species and varieties : their origin by mutation / lectures delivered at the University of California by Hugo DeVries ; edited by Daniel Trembly MacDougal.
    By: Vries, Hugo de, - MacDougal, Daniel Trembly,
    Edition: 2nd ed., corr. and rev.
    Publication info: Chicago :The Open Court ;1906, c1904.
    Contributed by: MBLWHOI Library
    Subjects: Evolution  Hybridization, Vegetable  Plants  Variation  
    BHL Collections: MBLWHOI Library, Woods Hole
    View Book
  43. Species and varieties, their origin by mutation; lectures delivered at the University of California
    By: Vries, Hugo de, - MacDougal, Daniel Trembly,
    Edition: 2d ed., corr. and rev.
    Publication info: Chicago,The Open Court Publishing Company; [etc., etc.]1906.
    Contributed by: Cornell University Library
    Subjects: Evolution  Hybridization, Vegetable  Plants  Variation  
    View Book
  44. Species and varieties, their origin by mutation; lectures delivered at the University of California by Hugo De Vries Edited by Daniel Trembly MacDougal.
    By: Vries, Hugo de, - MacDougal, Daniel Trembly,
    Publication info: ChicagoOpen Court Pub. Co.1905
    Contributed by: Gerstein - University of Toronto (archive.org)
    Subjects: Evolution  Hybridization, Vegetable  Plants  Variation  
    View Book
  45. Species and varieties; their origin by mutation. Lectures delivered at the University of California by Hugo De Vries. Edited by Daniel Trembly MacDougal.
    By: Vries, Hugo de, - MacDougal, Daniel Trembly,
    Edition: 2d ed., corrected and rev.
    Publication info: Chicago,K. Paul, Trench, Truber,1906 [c1904]
    Contributed by: NCSU Libraries (archive.org)
    Subjects: Evolution  Plant hybridization  Plants  Variation  
    View Book
  46. ... Studies of variation in insects. By Vernon L. Kellogg and Ruby G. Bell...
    By: Kellogg, Vernon Lyman, - Smith, Ruby Green Bell,
    Publication info: Washington, D. C.,The Academy,1904.
    Contributed by: University of California Libraries (archive.org)
    Subjects: Animals  Insects  Variation  
    View Book
  47. A study of some of the factors that influence the yield and the composition of growing pasture grass /
    By: Barnhart, Jesse Melangthon.
    Publication info: 1912.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: 1912  Chemistry  Grasses  Harvesting  Pasture plants  Research  Theses  UIUC  Variation  
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  48. The survival of the unlike; a collection of evolution essays suggested by the study of domestic plants.
    By: Bailey, L. H.
    Edition: 5th ed.
    Publication info: New YorkMacmillan1906
    Contributed by: Gerstein - University of Toronto (archive.org)
    Subjects: Evolution  Plants  Plants, Cultivated  Variation  
    View Book
  49. Variability and significance of parietal and ventral scales in the marine snakes of the genus Lapemis (Serpentes, Hydrophiidae), with comments on the occurance of spiny scales in the genus / Paul Gritis, Harold K. Voris.
    By: Gritis, Paul A. - Voris, Harold K.
    Publication info: [Chicago] :Field Museum of Natural History,1990.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Hydrophidae  Lapemis  Variation  
    View Book
  50. Variability of mammals = Izmenchivost' mlekopitayushchikh / A. V. Yablokov ; rev. by the author for this ed. ; scientific editor of translation, L. Van Valen.
    By: IAblokov, A. V. - National Science Foundation (U.S.) - Smithsonian Institution
    Publication info: New Delhi :available from the U. S. Dept of Commerce, National Technical Information Service,1974.
    Contributed by: Smithsonian Libraries
    Subjects: Anatomy  Mammals  Morphology (Animals)  Variation  Variation (Biology)  
    BHL Collections: Smithsonian Libraries
    View Book
  51. Variation in clutch and litter size in New World reptiles / by Henry S. Fitch.
    By: Fitch, Henry S.
    Publication info: Lawrence :University of Kansas,1985.
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
    Subjects: Reproduction  Reptiles  United States  Variation  
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
    View Book
  52. Variation in Myiozetetes luteiventris.
    By: Blake, Emmet Reid,
    Publication info: Chicago,Chicago Natural History Museum,1961.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Myiozetetes luteiventris  Variation  Zoology  
    View Book
  53. Variation in the quail-dove Geotrygon frenata [by] Emmet R. Blake, Gunnar Hoy [and] Francisco Contino.
    By: Blake, Emmet Reid,
    Publication info: [Chicago]Chicago Natural History Museum,1961.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Ecology  Geotrygon frenata  Variation  
    View Book
  54. The variation of animals in nature, by G.C. Robson ... and O.W. Richards ... with 2 coloured plates and 30 illustrations in the text.
    By: Robson, G. C. - Richards, Owain Westmacott,
    Publication info: London,Longmans, Green and co.[1936]
    Contributed by: MBLWHOI Library
    Subjects: Evolution  Natural selection  Variation  Zoology  
    BHL Collections: MBLWHOI Library, Woods Hole
    View Book
  55. Variations and genetic relationships of the garter-snakes, by Alexander G. Ruthven.
    By: Ruthven, Alexander Grant,
    Publication info: Washington,Govt. print. off.,1908.
    Contributed by: Smithsonian Libraries
    Subjects: Animals  Garter snakes  Variation  
    BHL Collections: Smithsonian Libraries
    View Book
  1. Intraspecific variation in the turtle barnacle, Cylindrolepas sinica Ren, 1980 (Cirripedia, Thoracica, Coronuloidea), with brief notes on habitat selectivity
    By: Hayashi, Ryota
    Type: Article
    In: ZooKeys
    Volume: 327
    Date: 2013
    Page Range: 35-42
    Publication info: Pensoft Publishers 2013
    Subjects: Cylindrolepas  epibiont  mitochondrial genes 12S and 16S  redescription  Turtle barnacle  Variation  
    View Article (External)
  2. Redescription of Atractus albuquerquei (Serpentes: Colubridae: Dipsadinae), with comments on geographical distribution and intraspecific variation
    By: Zaher,Hussam - Souza,Ivan - Gower,David J. - Hingst-Zaher,Erika - Silva Jr,Nelson Jorge da
    Type: Article
    In: Papéis Avulsos de Zoologia (São Paulo)
    Date: 2005-01-01
    Subjects: Atractus albuquerquei  Dipsadinae  Distribution  Serpentes  Variation  
    View Article (External)
  3. Synonymic notes on North and Central American Lerodea Scudder and Corticea Evans (Lepidoptera, Hesperiidae, Hesperiinae)
    By: Warren,Andrew D. - Mielke,Olaf H. H.
    Type: Article
    In: Revista Brasileira de Zoologia
    Date: 2005-03-01
    Subjects: Arizona  Mexico  Neotropical  Texas  Variation  
    View Article (External)