Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1891)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1892)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1893)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1895)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1899)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1903)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1907)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1911)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1912)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1926)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1927)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1931)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1932)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1938)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1940)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1942)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1944)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.])

Proceedings of the VIIth International Orthnithological Congress at Amsterdam 1930 - Beaufort, L. F. de (Lieven Ferdinand), 1879 -1968 (C. de Boer Jr, 1931)

Provincial Museum of Natural History and Enthnology - British Columbia Provincial Museum. (Printed by Richard Wolfenden, 1909)

Ptaki - Lemberg. Muzeum imienia Dzieduszyckich. (Z I Zwiazkowij drukarni, 1880)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1906)

Quarterly journal of the Florida Academy of Sciences - Florida Academy of Sciences. (Florida Academy of Sciences, 1958)

Rapport sur une mission scientifique dans les jardins et établissements zoologiques publics et privés des États-unis et du Canada et conclusions générales sur les jardins zoologiques - Loisel, Gustave. (Imprimerie National, 1908)

Recensio avium in academici liberi baronis de Mueller ornithologico museo stuttgardiano collectarum - Calwer, C. G. (Carl Gustav), 1821 -1874 (Officinae Regiae, 1854)

Report of the State board of agriculture on the work of extermination of the gypsy moth - Massachusetts. State board of agriculture. (Wright & Potter printing co., state printers, 1893)

Report of the State Entomologist on injurious and other insects of the state of New York - Felt, Ephraim Porter, 1868 -1943 (Weed, Parsons and Co.; University of the State of New York, 1902)

Report of the state zoölogist - Herrick, C. L. (Clarence Luther), 1858 -1904 (1892)

Report on a collection of birds and mammals from Vancouver Island - Swarth, Harry S. (Harry Schelwald), 1878 -1935 (University of California Press, 1912)

Report on the birds of Pennsylvania. With special reference to the food-habits, based on over three thousand stomach examinations - Pennsylvania. Ornithologist. (E.K. Meyers, State Printer, 1888)

Report on the birds of Pennsylvania : with special reference to the food habits, based on over four thousand stomach examinations - Warren, Benjamin Harry, 1858 -1926 (E.K. Meyers, State Printer, 1890)

Report on the birds of Pennsylvania. With special reference to the food-habits, based on over four thousand stomach examinations - Pennsylvania. Ornithologist. (E. K. Meyers, state printer, 1890)

Report on the birds of Pennsylvania : with special reference to the food habits, based on over three thousand stomach examinations - Pennsylvania. Ornithologist. (E.K. Meyers, State Printer, 1888)

Report on the birds of Pennsylvania; with special reference to the food habits, based on over four thousand stomach examinations - Pennsylvania. Ornithologist. (E.K. Meyers, State Printer, 1890)

Report on the ornithology of the Death Valley Expedition of 1891 - United States. Bureau of Biological Survey. (U.S. G.P.O.?], 1893)

Report on the progress and condition of the United States National Museum - United States National Museum (U.S. Govt. Print. Off, 1929)

Report on the progress and condition of the U.S. National Museum for the year ending June 30 ... - United States National Museum (G.P.O, 1911)

Report upon natural history collections made in Alaska : between the years 1877 and 1881 - Bean, Tarleton H. (Tarleton Hoffman), 1846 -1916 (Government Printing Office, 1887)

Report upon natural history collections made in Alaska between the years 1877 and 1881 - Bean, Tarleton H. (Tarleton Hoffman), 1846 -1916 (Govt. Print. Off, 1887)

Reports of the Princeton University Expeditions to Patagonia, 1896-1899. J. B. Hatcher in charge - Princeton University Expeditions to Patagonia 1896 -1899 (The University, 1904)

Reports of the Princeton University Expeditions to Patagonia, 1896-1899. J. B. Hatcher in charge - Princeton University Expeditions to Patagonia 1896 -1899 (The University, 1927)

A reprint of the North American zoology, by George Ord. Being an exact reproduction of the part originally compiled by Mr. Ord for Johnson & Warner, and first published by them in their 2d American ed. of Guthrie's geography, in 1815. Taken - Ord, George, 1781 -1866 (Pub. by the editor, 1894)

Results of a biological reconnoissance of the Yukon river region. : General account of the region. Annotated list of mammals - Osgood, Wilfred Hudson, 1875 -1947 (Government Printing Office, 1900)

Results of a biological reconnoisance of the Yukon river region. General account of the region. Annotated list of mammals - Osgood, Wilfred Hudson, 1875 -1947 (Govt. Print. Off, 1900)

Results of a biological reconnoissance of the Yukon River region - Osgood, Wilfred Hudson, 1875 -1947 (G.P.O, 1900)

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The Review of applied entomology. Series A, Agricultural - C.A.B. International. Bureau of Crop Protection (Commonwealth Agricultural Bureaux, etc, 1914)

The Review of applied entomology. Series A, Agricultural - C.A.B. International. Bureau of Crop Protection (Commonwealth Agricultural Bureaux, etc, 1915)

A revised catalogue of the birds of Kansas : with descriptive notes of the nests and eggs of the birds known to breed in the state - Goss, N. S. (Nathaniel S.) (Kansas Publishing House, 1886)

A revised catalogue of the birds of Kansas. With descriptive notes of the nests and eggs of the birds known to breed in the state - Goss, N. S. (Nathaniel S.) (Kansas Publishing House, 1886)

Revisions of Indian birds - Biswas, Biswamoy, 1923 -1994 (American Museum of Natural History, 1951)

Revue française d'ornithologie - Société ornithologique et mammalogique de France. (L. Denise, 1911)

Revue française d'ornithologie - Société ornithologique et mammalogique de France. (L. Denise, 1915)

Riverby - Burroughs, John, 1837 -1921 (Houghton, Mifflin, 1895)

Riverby - Burroughs, John, 1837 -1921 (Houghton, Mifflin, 1902)

The Riverside natural history - Kingsley, J. S. (John Sterling), 1854 -1929 (Houghton, Mifflin and company, 1888)

Rivista italiana di ornitologia - Museo civico di storia naturale di Milano. (Società italiana di scienze naturali, 1913)

Roosevelt wild life annals - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (Roosevelt Wild Life Forest Experiment Station, 1932)

Roosevelt wild life bulletin ... of the Roosevelt Life Forest Experiment Station of the New York College of Forestry at Syracuse University - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (The University, 1921)

Roosevelt wild life bulletin ... of the Roosevelt Life Forest Experiment Station of the New York College of Forestry at Syracuse University - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (The University, 1923)

Roosevelt wild life bulletin ... of the Roosevelt Life Forest Experiment Station of the New York College of Forestry at Syracuse University - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (The University, 1926)

Roosevelt wild life bulletin ... of the Roosevelt Life Forest Experiment Station of the New York College of Forestry at Syracuse University - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (The University, 1931)

Roosevelt wild life bulletin ... of the Roosevelt Life Forest Experiment Station of the New York College of Forestry at Syracuse University - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (The University, 1935)

Roosevelt wild life bulletin ... of the Roosevelt Life Forest Experiment Station of the New York College of Forestry at Syracuse University - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (The University, 1937)

Roundheaded apple-tree borer : its life history and control - Brooks, Fred E. (Fred Ernest), 1868 -1933 (U.S. Dept. of Agriculture, 1920)

The scansorial foot of the woodpeckers, with comments on the evolution of perching and climbing feet in birds - Miller, Waldron DeWitt, 1879 -1929 (American Museum of Natural History, 1959)

Scientific publications of the Cleveland Museum of Natural History - Cleveland Museum of Natural History (The Museum, 1928)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 2016)

The Scottish naturalist (T. Buncle & Co. [etc.], 1921)

The Scottish naturalist (T. Buncle & Co. [etc.], 1930)

sen lin you hai dong wu bian lan - Pavlovskiĭ, E. N. (Evgeniĭ Nikanorovich) 1884 -1965 (ke xue chu ban she, 1957)

Signs and seasons - Burroughs, John, 1837 -1921 (Houghton, Mifflin, 1895)

Signs and seasons - Burroughs, John, 1837 -1921 (Houghton Mifflin and company, 1914)

Signs and seasons - Burroughs, John, 1837 -1921 (Houghton, Mifflin and Company, 1901)

Skandinaviens foglar - Holmgren, August Emil, 1829 -1888 (P.A. Norstedt & söner, 1866)

Smithsonian contributions to knowledge - Smithsonian Institution (Smithsonian Institution, 1895)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1881)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1921)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1942)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1948)

Smithsonian scientific series - Smithsonian Institution (Smithsonian Institution Series, Inc, 1931)

Societatum litterae (R. Friedländer, 1887)

Some Chinese vertebrates ... - Bangs, Outram, 1862 -1932 (Printed for the Museum, 1912)

Special bulletin - Smithsonian Institution (Government Printing Office, 1895)

Special papers - Ohio Academy of Science. (The Academy, 1903)

Spring notes from Tennessee - Torrey, Bradford, 1843 -1912 (Houghton, Mifflin and company, 1896)