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Proceedings of the Asiatic Society of Bengal - Asiatic Society of Bengal ([The Society], 1866)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1898)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1922)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1939)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1979)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1989)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1927)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1952)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1982)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 2000)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1929)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1955)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1962)

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Proceedings of the New England Zoölogical Club - New England Zoological Club. (The Club, 1902)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1883)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1885)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1889)

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.], 1948)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1950)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1954)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1957)

Proceedings of the Victoria Institute of Trinidad - Victoria Institute (Port of Spain, Trinidad; Tobago) (1895)

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Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1857)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1858)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1859)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1860)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1862)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1864)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1866)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1867)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1869)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1870)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1874)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1876)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1878)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1879)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1880)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1881)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1882)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1885)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1886)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1888)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1890)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1893)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1894)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1895)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1896)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1897)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1899)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1900)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1901)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1902)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1905)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1912)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1833)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1920)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1861)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1911)

Proceedings of the Zoological Society of London : an index to the artists, 1848-1900 - Johnson, Bryan R., 1956 - (Garland, 1986)

Prodrome de la flore corse : comprenant les résultats botaniques de six voyages exécutés en Corse sous les auspices de M. Emile Burnat - Briquet, John, 1870 -1931 (Georg, 1910)

Prodromus florae Batavae - Dozy, F. (Frans), 1807 -1856 (Sumptibus Societatis, apud J. Hazenberg, 1850)

Prodromus florae batavae; nieuwe lijst der Nederlandsche phanerogamen en vaatkryptogamen - Nederlandsche Botanische Vereeniging (F.E. Macdonald, 1901)

Prodromus florae Hercyniae; oder, Verzeichniss der in dem Harzgebiete wildwachsenden Pflanzen, nach dem Sexualsystem geordnet - Hampe, Ernst, 1795 -1880 (Gebauer, 1836)

Prodromus florae Hispanicae :seu Synopsis methodica omnium plantarum in Hispania, sponte nascentium vel frequentius cultarum quae innotuerunt - Willkomm, Moritz, 1821 -1895 (E. Schweizerbart, 1861)

Prodromus florae Hispanicae :seu Synopsis methodica omnium plantarum in Hispania, sponte nascentium vel frequentius cultarum quae innotuerunt - Willkomm, Moritz, 1821 -1895 (E. Schweizerbart, 1880)

Prodromus florae hispanicae, seu synopsis methodica omnium plantarum in Hispania - Willkomm, Moritz, 1821 -1895 (E. Schweizerbart, 1880)

Prodromus florae Novae-Hollandiae et Insulae van-Diemen : exhibens characteres plantarum - Brown, Robert, 1773 -1858 (Veneunt a reductione Isidis, 1821)

Proof-sheets of a bibliography of the languages of the North American Indians - Pilling, James Constantine, 1846 -1895 (Govt. Print. Off, 1885)

Prosperi Alpini Marosticensis, philosophi, medici, in celeberrimo Lyceo Patavino pharmaciae professoris ordinarii, hortique medici praefecti, Historiæ Ægypti naturalis : pars prima ; qua continentur Rerum Aegyptiarum libri quatuor - Alpini, Prosper, 1553 -1617 (Apud Gerardum Potuliet, 1735)

Prosperi Alpini ... Medicina Aegyptiorum : accessit huic editioni ejusdem auctoris liber De balsamo, et rhapontico, ut et Jacobi Bontii Medicina Indorum - Alpini, Prosper, 1553 -1617 (Apud Gerardum Potvliet, 1745)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1979)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1982)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 2012)

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Publication. Field Museum of Natural History Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1938)

The published writings of George Newbold Lawrence, 1844-1891 - Foster, Lyman Spalding. (Govt. Print. Off, 1892)

The published writings of Philip Lutley Sclater, 1844-1896 - Goode, G. Brown (George Brown), 1851 -1896 (Govt. Print. Off, 1896)

Rapid biological inventories - Field Museum of Natural History. Environmental; Conservation Programs. (Field Museum, 2001)

Rapid biological inventories - Field Museum of Natural History. Environmental; Conservation Programs. (Field Museum, 2002)

Rapid biological inventories - Field Museum of Natural History. Environmental; Conservation Programs. (Field Museum, 2003)

Rapid biological inventories - Field Museum of Natural History. Environmental; Conservation Programs. (Field Museum, 2004)

Rapid biological inventories - Field Museum of Natural History. Environmental; Conservation Programs. (Field Museum, 2006)

Rapid biological inventories - Field Museum of Natural History. Environmental; Conservation Programs. (Field Museum, 2007)

Rapid inventories, biological and social - Field Museum of Natural History. (Field Museum, 2008)

Rapport de la Commission d'Exploration du plateau central du Bresil - Cruls, L. (1894)

Rare plant inventory and plant community descriptions of the Sweet Grass Hills, Proposed Area of Critical Environmental Concern (PACEC), Toole and Liberty Counties, Montana - United States. Bureau of Land Management. (Western Technology and Engineering, Inc, 1989)