Occasional papers - San Diego Society of Natural History. (San Diego Society of Natural History, 1937)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1901)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1970)

Official report ... of the ... convention ... - California Fruit Growers' Convention. (1908)

The Ohio journal of science - Ohio Academy of Science. (Ohio Academy of Science, 1912)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1900)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1913)

On the Coleoptera known to occur in Indiana - Blatchley, W. S. (Willis Stanley), 1859 -1940 (W.B. Burford, contractor for state printing, 1910)

On the power, wisdom and goodness of God, as manifested in the creation of animals, and in their history, habits and instincts - Kirby, William, 1759 -1850 (Carey, Lea & Blanchard, 1836)

Opuscules entomologiques - Mulsant, Martial Étienne, 1797 -1880 (L. Maison, 1853)

Opuscules entomologiques - Mulsant, Martial Étienne, 1797 -1880 (L. Maison, 1856)

Orchard and farm (Calkins Newspaper Syndicate, 1898)

The Orchid review (Orchid Review ltd.], 1908)

Order Coleoptera - Smith, John Bernhard, 1858 -1912 (New Jersey State Museum, 1909)

Oriental text book and language of flowers - Adams, H. G. (Henry Gardiner), 1811 or 12 -1881 (Dean & Son, 1850)

The Ornithologist and oölogist (1887)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1907)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1911)

Our native grape. Grapes and their culture. Also descriptive list of old and new varieties - C. Mitzky & Co. (W. W. Morrison, printer, 1893)

An outline of the theory of organic evolution with a description of some of the phenomena which it explains - Metcalf, Maynard M. (Maynard Mayo), 1868 -1940 (MacMillan, 1906)

Outlines of entomology, published in connection with the author's annual reports upon injurious insects. Part first. Including the order of coleoptera - LeBaron, William. (State Journal Steam Print, 1874)

The oviposition response of insects - Richardson, Charles H. (Charles Howard), 1887 - (U.S. Dept. of Agriculture, 1925)

Pacific science - University of Hawaii. (University Press of Hawaii, 1953)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1926)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1928)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1933)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1946)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1952)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1974)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1982)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1987)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1991)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1993)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 2002)

Parasites and predators of the Mexican bean beetle in the United States - Howard, Neale F. (Neale Frederick), 1890 - (U.S. Dept. of Agriculture, 1936)

The pea aphis with relation to forage crops - Davis, John J. (John June), 1885 -1965 (U.S. Dept. of Agriculture, 1915)

The Peanut, the unpredictable legume; a symposium - Arant, F. S. (Frank Selman), 1904 - (National Fertilizer Association, 1912)

Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)

Petite faune analytique des coléoptères : français les plus communs - Houlbert, C. (Constant), 1857 -1947 (P. Dupont, 1892)

The Philosophical magazine : comprehending the various branches of science, the liberal and fine arts, geology, agriculture, manufactures and commerce (Richard Taylor and Co, 1811)

The Philosophical magazine : comprehending the various branches of science, the liberal and fine arts, geology, agriculture, manufactures and commerce (Richard Taylor and Co, 1812)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1972)

Plant lore, legends, and lyrics. Embracing the myths, traditions, superstitions, and folk-lore of the plant kingdom - Folkard, Richard. (S. Low, Marston, Searle, and Rivington, 1884)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1960)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1967)

The poetry of flowers and flowers of poetry : to which are added, a simple treatise on botany, with familiar examples, and a copious floral dictionary - Osgood, Frances Sargent, 1811 -1850 (Derby & Jackson, 1960)

The poetry of flowers and flowers of poetry : to which are added, a simple treatise on botany, with familiar examples, and a copious floral dictionary - Osgood, Frances Sargent, 1811 -1850 (Derby & Jackson, 1858)

The poetry of flowers and flowers of poetry; to which are added, a simple treatise on botany, with familiar examples, and a copious floral dictionary - Osgood, Frances Sargent, 1811 -1850 (J.C. Riker, 1851)

The poetry of flowers and flowers of poetry; to which are added, a simple treatise on botany, with familiar examples, and a copious floral dictionary - Osgood, Frances Sargent, 1811 -1850 (J.C. Riker, 1849)

The poetry of flowers and flowers of poetry: to which are added, a simple treatise on botany, with familiar examples, and a copious floral dictionary - Osgood, Frances Sargent, 1811 -1850 (J.C. Riker, 1841)

Polskie pismo entomologiczne = Polish journal of entomology = Bulletin entomologique de Pologne - Polski Zwiazek Entomologiczny (Panstwowe Wydawn. Naukowe, 1923)

Pomona College journal of entomology - Pomona College (Claremont, Calif.). Department of Biology. (Published under the patronage of Ontario-Cucamonga Citrus Association by the Dept. of Biology of Pomona College, 1911)

The popular encyclopedia; being a general dictionary of arts, sciences, literature, biography, history, and political economy, reprinted from the American edition of the "Conversations lexicon" ... with dissertations on the rise and progress of literature (Blackie, 1900)

Popular gardening and fruit growing; An illustrated periodical devoted to horticulture in all its branches (Popular gardening publishing company, 1889)

Popular natural history : a description of animal life, from the lowest forms up to man - Kingsley, J. S. (John Sterling), 1854 -1929 (Estes & Lauriat, 1890)

Portraits of celebrated racehorses of the past and present centuries : in strictly chronological order, commencing in 1702 and ending in 1870 together with their respective pedigrees and performance recorded in full - Taunton, Thomas Henry. (S. Low, Marston, Searle & Rivington, 1887)

Potato pests - Riley, Charles V. (Charles Valentine), 1843 -1895 (O. Judd company, 1876)

Pozsonyi Orvos-Termeszettudomanyi Egyesulet Kozlemenyei - Verein für natur- und heilkunde, Pressburg (1873)

The Practical entomologist - American Entomological Society. (Entomological Society of Philadelphia, 1867)

The Practical entomologist : a monthly bulletin - Entomological Society of Philadelphia (Entomological Society of Philadelphia, 1866)

A preliminary list of the insects of the Province of Quebec part III : Coleoptera - Chagnon, Gustave, 1871 -1966 (s.n.], 1917)

Preliminary report of the United States Geological Survey of Wyoming : and portions of contiguous territories, (being a second annual report of progress) - Geological; Geographical Survey of the Territories (U.S.) (Govt. Print. Off, 1872)

Preliminary report on the alfalfa weevil. [Phytonomus posticus] - Webster, F. M. (Francis Marion), 1849 -1916 (Govt. print. off, 1912)

Principle insect enemies of the sugar beet in the territories served by the Great Western Sugar Company - Great Western Sugar Company (Agricultural Dept., the Great Western Sugar Company, 1920)

Proceedings - Entomological Society of Canada (1863-1871) (Entomological Society of Ontario, 1895)

Proceedings - Northern Crop Science Laboratory (U.S.) (USDA, ARS, Northern Crop Science Laboratory)

Proceedings and transactions of the British Entomological and Natural History Society - British Entomological; Natural History Society. (British Entomological and Natural History Society, 1976)

Proceedings and transactions of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (The Society, 1947)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1852)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1854)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1859)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1860)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1861)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1866)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1867)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1912)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1913)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1841)

Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge - American Philosophical Society. (American Philosophical Society, 1877)

Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge - American Philosophical Society. (American Philosophical Society, 1878)

Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge - American Philosophical Society. (American Philosophical Society, 1898)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1991)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1993)

Proceedings of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1875)

Proceedings of the Canadian Institute - Glenny, George, 1793 -1874 (Canadian Institute, 1885)

Proceedings of the Canadian Institute - Glenny, George, 1793 -1874 (Canadian Institute, 1888)

Proceedings of the Cleveland Naturalists' Field Club - Cleveland Naturalists' Field Club. (1903)

Proceedings of the Davenport Academy of Natural Sciences - Davenport Academy of Natural Sciences. (Academy of Natural Sciences [etc.], 1867)

Proceedings of the Davenport Academy of Natural Sciences - Davenport Academy of Natural Sciences. (Academy of Natural Sciences [etc.], 1897)

Proceedings of the Davenport Academy of Natural Sciences - Davenport Academy of Natural Sciences. (Academy of Natural Sciences [etc.], 1889)

Proceedings of the Entomological Society of British Columbia - Entomological Society of British Columbia (Entomological Society of British Columbia, 1912)

Proceedings of the Entomological Society of British Columbia - Entomological Society of British Columbia (Entomological Society of British Columbia, 1914)

Proceedings of the Entomological Society of British Columbia - Entomological Society of British Columbia (Entomological Society of British Columbia, 1955)

Proceedings of the Entomological Society of Ontario - Entomological Society of Ontario. (Entomological Society of Ontario, 1963)

Proceedings of the Entomological Society of Ontario - Entomological Society of Ontario. (Entomological Society of Ontario, 1969)