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.], 1902)

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.], 1908)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1915)

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Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1863)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1865)

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.], 1871)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1877)

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.], 1881)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1884)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1891)

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

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

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Procès-verbaux - Société Linnéenne de Bordeaux. (1915)

Procès-verbaux - Société Linnéenne de Bordeaux. (1929)

Procès-verbaux - Société Linnéenne de Bordeaux. (1939)

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Prodromus faunae mediterraneae, sive Descriptio animalium maris Mediterranei incolarum, quam comparata silva rerum quatenus innotuit, adiectis locis et nominibus vulgaribus eorumque auctoribus - Carus, Julius Victor, 1823 -1903 (E. Schweizerbart, 1889)

Prodromus faunae molluscorum testaceorum maria europaea inhabitantium - Kobelt, Wilhelm, 1840 -1916 (Bauer & Raspe, 1888)

Profitable pigeon breeding; a practical manual explaining how to breed pigeons successfully,–whether as a hobby or as an exclusive business - Hazard, F. Arthur. (American Pigeon Journal Company, 1922)

ProHort - Center for Urban Horticulture (1996)

Property regulations of the U. S. Department of agriculture, effective July 1, 1916 - United States. Department of Agriculture. (Govt. print. off, 1916)

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A qualitative and quantitative study of the surface zooplankton at Beaufort, North Carolina - Sutcliffe, William H. (1950)

Quantification of Libby Reservoir water levels needed to maintain or enhance reservoir fisheries - Montana. Department of Fish, Wildlife,; Parks (Bonneville Power Administration, Division of Fish and Wildlife, 1984)

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The Queensland flora - Bailey, Frederick Manson 1827 -1915 (Printed by H. J. Diddams & co, 1902)

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Raccolta dei fossili subappennini di Monte Mario presso Roma - Gardini, Galdino (s.n, 1864)

Rad - Jugoslavenska akademija znanosti i umjetnosti. Razred za prirodne nauke. (Jugoslavenska akademija znanosti i umjetnosti, 1873)

Rad - Jugoslavenska akademija znanosti i umjetnosti. Razred za prirodne nauke. (Jugoslavenska akademija znanosti i umjetnosti, 1872)

Rambles of a naturalist on the shores and waters of the China Sea : being observations in natural history during a voyage to China, Formosa, Borneo, Singapore, etc., made in Her Majesty's vessels in 1866 and 1867 - Collingwood, Cuthbert, 1826 -1908 (J. Murray, 1868)

Range and pasture management - Sampson, Arthur W. (Arthur William), 1884 -1967 (John Wiley, 1923)

RAPLOT, a computer program for data processing and graphical display for radioisotopic sand tracer study - Turner, Philip Ambrose, 1934 - (U.S. Coastal Engineering Research Center, 1970)

Rapport sur les Iles de la Reine-Charlotte, 1878 - Geological Survey of Canada (s.n, 1880)

Rare plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Alanwold Nurseries, 1944)

Real-time position determinations using the GPS TI4100/GEOSTAR receiver - Rakowsky, Peter J. (Naval Postgraduate School, 1984)

Recherches histologiques sur les mollusques lamellibranches ... - Roule, Louis, 1861 -1942 (s.n, 1887)

Recherches physiologiques sur Tapes decussata et quelques tapidées - Piéri, J.-B. (Imprimerie E. Jamin, 1895)