Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1892)

Pamphlets on forest protection (1900)

Pamphlets on forestry in Maine (1900)

[Pamphlets on viticulture] - California Agricultural Experiment Station. (Superintendent of state printing, 1897)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1926)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1932)

Pennsylvania farm journal - Darlington, J. L. (A.M. Spangler, 1855)

Periódico zoológico - Sociedad Entomológica Argentina. (Sociedad Entomica Argentina, 1874)

The pests of the farm; being an account of the various depredating animals, birds, and insects which annoy the American farmer. With directions for their destruction. With illustrations on wood (A.O. Moore, 1852)

Petite faune analytique des coléoptères : français les plus communs - Houlbert, C. (Constant), 1857 -1947 (P. Dupont, 1892)

Die Pflanzenfeinde aus der Klasse der Insekten. Ein nach Pflanzenfamilien geordnetes Handbuch sämmtlicher auf den einheimischen Pflanzen bisher beobachteten Insekten zum Gebrauch für Entomologen, Insektensammler, Botaniker, Land- und Forstwirthe und Gartenfreunde - Kaltenbach, J. H. (Johann Heinrich), 1807 -1876 (J. Hoffmann, 1874)

Pflanzenmikrochemie : ein Hilfsbuch beim mikrochemischen Studium pflanzlicher Objekte - Tunmann, Otto, 1867 -1919 (Gebrüder Borntraeger, 1913)

Die Pflanzenwelt Deutschlands; Lehrbuch der Formations- biologie. Eine Darstellung der Lebensgeschichte der wildwachsenden Pflanzenvereine und der Kulturflächen - Graebner, Paul, 1871 -1933 (Quelle & Meyer, 1909)

Die pflanzenzucht im walde - Furst, Hermann. (J. Springer, 1897)

Phegea - Vlaamse Vereniging voor Entomologie. (Vlaamse Vereniging voor Entomologie, 1986)

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Phytopathologie. Die krankheiten der culturgewächse. Für land- und forstwirthe, gärtner und botaniker - Hallier, Ernst, 1831 -1904 (W. Engelmann, 1868)

P.J. Berckmans Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1910)

P.J. Berckmans Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1911)

P.J. Berckmans Co. : 1904 1905 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1904)

P.J. Berckmans Co. : 1905 1906 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1903)

P.J. Berckmans Co. : 1905 1906 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1905)

P.J. Berckmans Co. Incorporated - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1907)

P.J. Berckmans Co., Incorporated [catalog] 1906-1907 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fruitland Nurseries, 1906)

Plant pest handbook for Connecticut - Britton, Wilton Everett, 1868 -1939 (Connecticut Agricultural Experiment Station, 1933)

The Plough, the loom, and the anvil (J.S. Skinner & Son], 1848)

Popular gardening for town and country (Popular Gardening Pub. Co, 1888)

Rapport annuel = Annual report - Société Provancher d'histoire naturelle du Canada. (Provancher Society of Natural History of Canada, 1947)

Potato culture : How to cook the potato - Compton, D. A. (Orange Judd and Co, 1870)

Pozsonyi Orvos-Termeszettudomanyi Egyesulet Kozlemenyei - Verein für natur- und heilkunde, Pressburg (1873)

Practical and scientific fruit culture - Baker, Charles R. (Lee and Shepard, 1866)

The Practical entomologist - American Entomological Society. (Entomological Society of Philadelphia, 1865)

The Practical entomologist - American Entomological Society. (Entomological Society of Philadelphia, 1867)

The Practical entomologist : a monthly bulletin - Entomological Society of Philadelphia (Entomological Society of Philadelphia, 1867)

The Practical entomologist : a monthly bulletin - Entomological Society of Philadelphia (Entomological Society of Philadelphia, 1866)

The Practical entomologist : a monthly bulletin - Entomological Society of Philadelphia (Entomological Society of Philadelphia, 1865)

The practical fruit, flower and vegetable gardener's companion, with a calendar - Pardee, R. G. (Richard Gay), 1811 -1869 (C. M. Saxton and co, 1855)

The practical fruit, flower and vegetable gardener's companion with calendar - Pardee, R. G. (Richard Gay), 1811 -1869 (C.M. Saxton and Co, 1855)

A practical handbook of British birds - Witherby, H. F. (Harry Forbes), 1873 -1944 (Witherby, 1920)

A practical handbook of British birds - Witherby, H. F. (Harry Forbes), 1873 -1944 (Witherby, 1924)

A practical handbook of British birds - Witherby, H. F. (Harry Forbes), 1873 -1944 (Witherby, 1922)

A preliminary list of the insects of the Province of Quebec part III : Coleoptera - Chagnon, Gustave, 1871 -1966 (s.n.], 1917)

Primae lineae systematis naturæ : nexui naturali omnium evolutionique progressivae per nixus reascendentes superstructi - Gori͡aninov, Pavel Fedorovich, 1796 -1865 (Typis Karoli Krajanis, 1834)

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Proceedings and transactions of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (The Society, 1935)

Proceedings and transactions of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (The Society, 1959)

Proceedings and transactions of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (The Society, 1965)

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Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1860)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1861)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1865)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1866)

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

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Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge - American Philosophical Society. (American Philosophical Society, 1877)

Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge - American Philosophical Society. (American Philosophical Society, 1878)

Proceedings of the ... annual meeting of the Florida State Horticultural Society - Florida State Horticultural Society. Meeting. (The Society, 1901)

Proceedings of the Boston Society of Natural History - Boston Society of Natural History. (Boston Society of Natural History, 1875)

Proceedings of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1895)

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, 1966)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1965)

Proceedings of the Cleveland Naturalists' Field Club - Cleveland Naturalists' Field Club. (1903)

Proceedings of the Davenport Academy of Natural Sciences - Davenport Academy of Natural Sciences. (Academy of Natural Sciences [etc.], 1889)

Proceedings of the Entomological Society of British Columbia - Entomological Society of British Columbia (Entomological Society of British Columbia, 1914)