Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1919)

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

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1932)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 2001)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 2003)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 2004)

Proceedings of the Indiana Academy of Science - Indiana Academy of Science. ([s.n.], 1901)

Proceedings of the Indiana Academy of Science - Indiana Academy of Science. ([s.n.], 1900)

Proceedings of the Indiana Academy of Science - Indiana Academy of Science. ([s.n.], 1918)

Proceedings of the Indiana Academy of Science - Indiana Academy of Science. ([s.n.], 1919)

Proceedings of the Indiana Academy of Science - Indiana Academy of Science. ([s.n.], 1920)

Proceedings of the Indiana Academy of Science - Indiana Academy of Science. ([s.n.], 1922)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1887)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1895)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1897)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1907)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1910)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1914)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1915)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1918)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1919)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1922)

Proceedings of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1954)

Proceedings of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1982)

Proceedings of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1983)

Proceedings of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1984)

Proceedings of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1989)

Proceedings of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 2013)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1960)

Prof. dr. Thomé's Flora von Deutschland, Österreich und der Schweiz, in wort und bild, für schule und haus ... mit ... - Migula, W. (Walter), 1863 -1938 (1905)

Prof. dr. Thomé's Flora von Deutschland, Österreich und der Schweiz, in wort und bild, für schule und haus ... mit ... - Migula, W. (Walter), 1863 -1938 (1913)

Progressus rei botanicae = Fortschritte der Botanik = Progrès de la botanique = Progress of botany - Association internationale des botanistes. (G. Fischer, 1907)

Propagation of wild birds; a manual of applied ornithology, treating of practical methods of propagation of quails, grouse, wild turkey, pheasants, partridges, pigeons and doves, and waterfowl, in America, and of attracting and increasing wild birds in general, including song-birds - Job, Herbert Keightley, 1864 -1933 (1915)

Proper functioning condition assessment for lentic areas - Smith, David R (U.S. Department of the Interior, Bureau of Land Management, National Operations Center, 2020)

A provisional list of the parasitic fungi of Wisconsin - Davis, John Jefferson. (1914)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1915)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1971)

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

Publication. Field Columbian Museum Botanical series - Field Columbian Museum. (Field Columbian Museum, 1896)

Publications in botany - National Museum of Natural Sciences (Canada) (The Museum, 1981)

[Publications on plant pathology from Cornell Agricultural Experiment Station Memoirs, collected by H.S. Jackson.] - Jackson, H. S. (Herbert Spencer), 1883 -1951 (Cornell University], 1915)

La punaise terne et la production de fraises - Bostanian, Noubar J. (Direction générale de la recherche, Agriculture Canada, 1994)

Quaestiones entomologicae - University of Alberta. Dept. of Entomology. (Dept. of Entomology, University of Alberta, 1971)

Quaestiones entomologicae - University of Alberta. Dept. of Entomology. (Dept. of Entomology, University of Alberta, 1988)

Range improvement notes - United States. Forest Service. (Forest Service, U.S. Dept. of Agriculture, Intermountain Region, 1956)

Range plant communities and carrying capacity for the upper foothills subregion : sixth approximation - Canada. Agriculture; Agri-Food Canada. (Alberta Sustainable Resource Development, Public Lands & Forests Division, 2007)

Range plant community types and carrying capacity for the dry and central mixedwood subregion : second approximation - Willoughby, Michael, 1959 - (Alberta Environmental Protection, Lands and Forest Services, 1996)

Range plant community types and carrying capacity for the lower foothills subregion of Alberta : fourth approximation - Alberta. Alberta Sustainable Resource Development. (Sustainable Resource Development, Public Lands and Forests, 2005)