The palms of British India and Ceylon - Blatter, Ethelbert, 1877 -1934 (H. Milford, 1926)

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, 1927)

Papilio - Edwards, Henry, 1827 -1891 (New York Entomological Club, 1883)

Paxton's Botanical dictionary; comprising the names, history, and culture of all plants known in Britain; with a full explanation of technical terms. New ed. including all the new plants up to the present year - Paxton, Joseph, Sir, 1803 -1865 (Bradbury, Evans, & co, 1868)

Peter Henderson & Co.'s 1882 catalogue of bulbs for fall planting, plants for winter flowering, seeds for fall sowing - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1882)

Peter Henderson & Co.'s 1898 autumn wholesale catalogue for florists and market gardeners - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1898)

Peter Henderson & Co.'s August to December 1900 wholesale catalogue of bulbs, plants and seeds, tools, fertilizers, insecticides, and requisites for the greenhouse, garden and farm - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1900)

Peter Henderson & Co.'s August to December 1901 wholesale catalogue of bulbs, plants and seeds, tools, fertilizers, insecticides, and requisites for the greenhouse, garden and farm - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1901)

Peter Henderson & Co.'s catalogue of everything for the garden : 1880 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1880)

Peter Henderson & Co.'s catalogue of everything for the garden : 1877 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1877)

Peter Henderson & Co.'s combined wholesale list from April 1st to May 15th, 1882. : for florists embracing plants, flower seeds and bulbs. : for market gardeners embracing vegetable seeds, plants and implements - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1882)

Peter Henderson & Co.'s combined wholesale list from February 15th to April 1st, 1882. : for florists embracing plants, flower seeds and bulbs. : for market gardeners embracing vegetable seeds, plants and implements - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1882)

Peter Henderson & Co.'s combined wholesale list from July 1st to August 15th, 1882. : for florists embracing plants, flower seeds and requisites. : for market gardeners embracing vegetable seeds, plants and implements - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1882)

Peter Henderson & Co.'s combined wholesale list from May 15th to July 1st, 1882. : for florists embracing plants, flower seeds and bulbs. : for market gardeners embracing vegetable seeds, plants and implements - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1882)

Peter Henderson & Co's manual of everything for the garden : 1899 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1899)

Peter Henderson & Co's manual of everything for the garden : 1899 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1898)

Peter Henderson & Co's manual of everything for the garden : 1889 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1889)

Peter Henderson & Co's manual of everything for the garden : 1892 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1892)

Peter Henderson & Co.'s quarterly trade list of plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1891)

Peter Henderson & Co.'s quarterly wholesale catalogue for florists. : plants, flower seeds, tools, summer flowering bulbs, insecticides and fertilizers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1892)

Peter Henderson & Co's seed catalogue : 1882 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1882)

Peter Henderson & Co.'s September to December 1899 wholesale catalogue of bulbs, plants and seeds, tools, fertilizers, insecticides, and requisites for the greenhouse, garden and farm - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1899)

Peter Henderson & Co.'s spring 1899 florists' and market gardeners' wholesale catalogue of plants, flower seeds, bulbs, vegetable seeds, farm seeds, fertilizers, insecticides, tools. etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1899)

Peter Henderson & Co's tested seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1891)

Peter Henderson & Co's tested seeds : dealers' wholesale catalogue, for season 1894 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1894)

Peter Henderson & Co's tested seeds : general wholesale catalogue to dealers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1896)

Peter Henderson & Co.'s wholesale catalogue for florists and market gardeners : plants, flower seeds, bulbs, vegetable seeds, farm seeds, fertilizers, insecticides, tools. etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1898)

Peter Henderson & Co.'s wholesale catalogue of bulbs, plants and flower seeds, for autumn planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1894)

Peter Henderson & Co.'s wholesale catalogue of bulbs, plants and flower seeds, for autumn planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1895)

Peter Henderson & Co.'s wholesale catalogue of bulbs, plants and seeds, also books, tools, fertilizers, insecticides and requisities - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1902)

Peter Henderson & Co.'s wholesale catalogue of bulbs, plants and flower seeds for autumn planting : 1896 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1896)

Peter Henderson & Co.'s wholesale catalogue of bulbs, plants and flower seeds, for autumn planting : 1897 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1897)

Peter Henderson & Co.'s wholesale catalogue of seeds, plants and bulbs, also tools, fertilizers, insecticides, books and requisites - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1903)

Peter Henderson & Co.'s wholesale catalogue of seeds, plants and bulbs, implements, tools, fertilizers, insecticides, books, requisites, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1904)

Peter Henderson & Co.'s wholesale price list of bulbs, plants, flower seeds, and requisites for florists - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1884)

Peter Henderson & Co.'s wholesale price list of plants, flower seeds and requisites for florists - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1884)

Peter Henderson & Co.s catalogue of everything for the garden : 1882 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1882)

Peter Henderson & Co.s manual of everything for the garden : 1885 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1885)

Peter Henderson & Co.s manual of everything for the garden : 1890 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1890)

Peter Henderson & Co.s manual of everything for the garden : 1886 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1886)

Die Pflanzenwelt Afrikas, insbesondere seiner tropischen Gebiete : Grundzge der Pflanzenverbreitung im Afrika und die Charakterpflanzen Afrikas - Engler, Adolf, 1844 -1930 (W. Engelman, 1910)

Die Pflanzenwelt Ost-Afrikas und der Nachbargebiete - Engler, Adolf, 1844 -1930 (D. Reimer, 1895)

Phegea - Vlaamse Vereniging voor Entomologie. (Vlaamse Vereniging voor Entomologie, 2003)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1883)

Phytochemie - Rochleder, Friedrich, 1819 -1874 (W. Engelmann, 1854)

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)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1975)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1997)

Pictorial practical vegetable growing; a practical manual giving directions for laying out kitchen gardens and allotments, describing the value and use of manures, advising as to the destruction of pests, dealing with the principal tools and appliances and treating on the culture and best varieties of every important vegetable - Wright, Walter P. (Walter Page), 1864 -1940 (Cassell and company, limited, 1903)

Pitcher & Manda catalogue of flower and vegetable seeds and bulbs for spring planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitcher & Manda, 1895)

Pitcher & Manda's autumn catalogue of bulbs, plants and seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pitcher & Manda, 1895)

Plant Form - Bell, Adrian D. (OXFORD UNIVERSITY PRESS, 1991)

Plant immigrants - United States. Office of Foreign Seed; Plant Introduction. (Office of Foreign Seed and Plant Introduction, 1919)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1923)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1929)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1934)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1942)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1951)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1956)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1966)

Plant propagation; greenhouse and nursery practice - Kains, M. G. (Maurice Grenville), 1868 -1946 (Orange Judd company, 1916)

Plantae Laurentianae ou Énumération des plantes récoltées au Congo en 1893 et 1895-1896 par Émile Laurent - Laurent, Emile, 1861 -1904 (1903)

Plantae Thonnerianae Congolenses ou Enumération des plantes récoltées en 1896 par M. Fr. Thonner dans le district des Bangales - Thonner, Franz, 1863 - (Oscar Schepens & Cie, 1900)

Plantarum vascularium genera :secundum ordines naturales digesta eorumque differentiae et affinitates tabulis diagnostacis expositae - Weidmann. (Libraria Weidmannia, 1836)

Les plantes - Faideau, Ferdinand, 1862 -1930? (Larousse, 1922)

The planting guide - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Malmo & Co, 1931)

Plants and nursery materials for sale - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Canal Zone Experiment Gardens, Nursery Division, 1941)

Plants of New Zealand - Blackwell, E. W. (Ellen Wright), 1864 -1952 (Whitcombe and Tombs, Ltd, 1906)

Pomona College journal of entomology - Pomona College (Claremont, Calif.). Department of Biology. (Published under the patronage of Ontario-Cucamonga Citrus Association by the Dept. of Biology of Pomona College, 1911)

Pomona College journal of entomology - Pomona College (Claremont, Calif.). Department of Biology. (Published under the patronage of Ontario-Cucamonga Citrus Association by the Dept. of Biology of Pomona College, 1910)

Popular fruit growing - Green, Samuel Bowdlear, 1859 -1910 (Webb Pub. Co, 1909)

Popular fruit growing - Green, Samuel Bowdlear, 1859 -1910 (Webb, 1914)

Popular fruit growing - Green, Samuel Bowdlear, 1859 -1910 (Press of Webb publishing co, 1912)

Popular fruit growing - Green, Samuel Bowdlear, 1859 -1910 (Webb Pub. Co, 1917)

Popular fruit growing : prepared especially for beginners and as a text book for schools and colleges - Green, Samuel Bowdlear, 1859 -1910 (Webb Publishing Co, 1910)

Popular history of the palms and their allies, containing a familiar account of their structure, geographical and geological distribution, history, properties, and uses - Seemann, Berthold, 1825 -1871 (L. Reeve, 1856)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1901)

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

Portefeuille des horticulteurs (J.-B. Gros, Rue du Foin Saint-Jacques, 18, 1847)

Practical plant biochemistry - Onslow, Muriel Wheldale 1880 -1932 (University Press, 1923)

Pre-project study on the conservation status of tropical timbers in trade. Final report to International Tropical Timber Organization. Vol 1 - Oldfield, Sara (ITTO, 1991)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1901)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1903)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1904)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1905)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1906)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1907)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1909)

Price list - Elm City Nursery Co. (Elm City Nursery Co, 1910)

Price list and specialties : season 1900 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Elm City Nursery Co, 1900)

Price list and specialties : season 1901 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Elm City Nursery Co, 1901)

Principles of plant culture; an elementary treatise designed as a text-book for beginners in agriculture and horticulture - Goff, E. S. (Emmett Stull), 1852 -1902 (The Author, 1899)

Principles of plant culture; an elementary treatise designed as a text-book for beginners in agriculture and horticulture - Goff, E. S. (Emmett Stull), 1852 -1902 (The author, 1897)

Principles of plant culture; an elementary treatise designed as a text-book for beginners in agriculture and horticulture - Goff, E. S. (Emmett Stull), 1852 -1902 (1897)

Proceedings - Entomological Society of Canada (1863-1871) (Entomological Society of Ontario, 1895)

Proceedings and transactions of the Royal Society of Canada. Délibérations et mémoires de la Société royale du Canada - Royal Society of Canada. (Société royale du Canada, 1909)

Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge - American Philosophical Society. (American Philosophical Society, 1883)

Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge - American Philosophical Society. (American Philosophical Society, 1895)

Proceedings of the Boston Society of Natural History - Boston Society of Natural History. (Boston Society of Natural History, 1890)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 2005)

Proceedings of the Entomological Society of British Columbia - Entomological Society of British Columbia (Entomological Society of British Columbia, 1947)

Proceedings of the Entomological Society of Philadelphia - American Entomological Society. ([Printed by the Society], 1863)

Proceedings of the Entomological Society of Philadelphia - American Entomological Society. ([Printed by the Society], 1864)

Proceedings of the Entomological Society of Philadelphia - American Entomological Society. ([Printed by the Society], 1865)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1968)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1996)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1980)

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, 1920)