Pamphlets on forestry. Fish and game (1900)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1955)

Paralogy in cladistic biogeography and analysis of paralogy-free subtrees - Nelson, Gareth J. (American Museum of Natural History, 1996)

Pesticides monitoring journal - United States. Chemical Information Division. (Technical Services Division, Office of Pesticide Programs, U.S. Environmental Protection Agency, 1978)

Photoperiodism and related phenomena in plants and animals; proceedings - Withrow, Robert B. 1904 -1958 (1959)

Phylogenetic studies of North American minnows : with emphasis on the genus Cyprinella (Teleostei, Cypriniformes) - Mayden, Richard L. (University of Kansas, 1989)

Phytographia Lusitaniae selectior, seu, Novarum, rariorum, et aliarum minus cognitarum stirpium, quae in Lusitania sponte veniunt, ejusdemque flora spectant, descriptiones iconibus illustratae - Brotero, Félix de Avellar, 1744 -1828 (Ex Typographia Regia, 1816)

Pigeon Lake fall walleye, Sander vitreus, index netting survey, 2004 - Alberta. Fish; Wildlife Division. (Alberta Sustainable Resources Development, Fish and Wildlife Division, 2005)

A plan for an educational exhibit of fishes - Miner, Roy Waldo, 1875 -1955 (Govt. print. off, 1910)

A preliminary annotated list of the lampreys and fishes of Illinois - Smith, Philip W. (Philip Wayne), 1921 - (1965)

Preliminary assessment of the water quality, biological habitat, and biotic communities of the Yalobusha River Watershed - Cooper, Charles M. (National Sedimentation Laboratory, 1998)

A preliminary report of the fishes of Minnesota - Cox, U. O. (1897)

A preliminary report on the biology of Harding County, northwestern South Dakota - Visher, Stephen Sargent, 1887 -1967 (State Publishing Co, 1914)

Preliminary report on the fish and fisheries of Ontario - Wright, R. Ramsay (Robert Ramsay), 1852 -1933 (s.n, 1892)

Price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Everglades Aquatic Nurseries, 1933)

Price list : Nov. 15 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Everglades Aquatic Nurseries, 1934)

Principles of animal ecology - Allee, W. C. (Warder Clyde), 1885 -1955 (Saunders Co, 1949)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1877)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1885)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1904)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1908)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1910)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1911)

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, 1914)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1917)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1919)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1920)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1922)

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