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Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1991)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1992)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1993)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1994)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1995)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1998)

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

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

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Proceedings of the fifteenth Southern Forest Tree Improvement Conference, June 19-21, 1979, Mississippi State University - Southern Forest Experiment Station (New Orleans, La.) ([Southern Forest Tree Improvement Committee], distributed by Eastern Tree Seed Laboratory, 1979)

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The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1894)

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, 1899)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1900)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1906)

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, 1913)

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

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

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Le propriétaire-planteur; semer et planter traité pratique et économique des reboisements et des plantations des parcs et jardins - Cannon, David (L. Laveur, 1906)

Protected Landscapes: experience around the world. Prepared for the International Symposium on Protected Landscapes, Grange-over-Sands, England 5-10 October 1987 (1987)

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The protection of stone fruits, excluding cherries, 1979-March 1985 : citations from Agricola concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1985)

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A provisional host-index of the fungi of the United States - Farlow, W. G. (William Gilson), 1844 -1919 (1891)

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

The pruning-book. A monograph of the pruning and training of plants as applied to American conditions - Bailey, L. H. (Liberty Hyde), 1858 -1954 (Macmillan, 1898)

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Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1880)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1885)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1889)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1890)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1894)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1897)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1900)

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Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1923)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1928)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 2015)

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Les pucerons nuisibles de la pomme de terre au Canada : cycle vital et clé d'identification - Canada. Agriculture Canada (Services d'information, Agriculture Canada, 1979)

Puissance du Canada : les forêts du Canada et leurs produits - Small, H. Beaumont (Henry Beaumont), 1832 -1919 ([publisher not identified], 1885)

Pulp wood of Canada - Macoun, James Melville, 1862 -1920 (Dept. of Agriculture, 1904)

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Quinby's new bee-keeping : the mysteries of bee-keeping explained : combining the results of fifty years' experience, with the latest discoveries and inventions, and presenting the most approved methods, forming a complete guide to successful bee-culture - Quinby, M. (Moses), 1810 -1875 (Orange Judd Co, 1912)

Quinby's new bee-keeping : The mysteries of bee-keeping explained. Combining the results of fifty years' experience, with latest discoveries and inventions, and presented the most approved methods, forming a complete guide to successful bee-culture - Quinby, M. (Moses), 1810 -1875 (Orange Judd Co, 1902)

Quinby's new bee-keeping. The mysteries of bee-keeping explained - Quinby, M. (Moses), 1810 -1875 (Orange Judd company, 1919)

Quinby's new bee-keeping. The mysteries of bee-keeping explained. Combining the results of fifty years' experience, with the latest discoveries and inventions, and presenting the most approved methods, forming a complete guide to successful bee-culture - Quinby, M. (Moses), 1810 -1875 (Orange Judd company, 1919)

Quinby's new bee-keeping. The mysteries of bee-keeping explained. Combining the results of fifty years' experience, with the latest discoveries and inventions, and presenting the most approved methods, forming a complete guide to successful bee-culture - Quinby, M. (Moses), 1810 -1875 (Orange Judd company, 1879)

Quinby's new bee-keeping. The mysteries of bee-keeping explained. Combining the results of fifty years' experience, with the latest discoveries and inventions, and presenting the most approved methods, forming a complete guide to succesful bee-culture - Quinby, M. (Moses), 1810 -1875 (Orange Judd Co, 1884)