Pamphlets on silviculture (1899)

Pamphlets on the lumber industry (1900)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1925)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1936)

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

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1963)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1978)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1989)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1994)

Papers and proceedings of the Royal Society of Tasmania - Royal Society of Tasmania. (The Society, 1893)

Papers from the Department of Forest Entomology - New York. College of Forestry, Syracuse. Dept. of Forest Entomology. (The University, 1922)

Papers from the Department of forest entomology - Osborn, Herbert 1856 -1954 (1922)

Papers on Coccidae or scale insects - United States. Bureau of Entomology. (Government Printing Office, 1908)

Papilio - Edwards, Henry, 1827 -1891 (New York Entomological Club, 1882)

The parasitic fungi of New Jersey - Schwarze, Carl Alois, 1886 - (New Jersey Agricultural Experiment Stations, 1917)

I parassiti vegetali delle piante coltivate od utili - Ferraris, Teodoro. (Sineo & Bo, 1913)

Le parfum chez la plante - Charabot, Eugène, 1870 -1938 (O. Doin, 1908)

Paris International Exhibition, 1900 - Macoun, James Melville, 1862 -1920 (s.n.], 1900)

Park and cemetery - Haight, R. J. (Rufus J.) (R.J. Haight, 1896)

Park and cemetery - Haight, R. J. (Rufus J.) (R.J. Haight, 1898)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1902)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1903)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1904)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1907)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1909)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1912)

The Park Nurseries [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Park Nurseries, 1927)

Part I. The living flora of West Virginia - Millspaugh, Charles Frederick, 1854 -1923 (Wheeling news litho. co, 1913)

A partial list of plants available for various uses in general landscape planting - Taylor, Albert D. (Albert Davis), 1883 -1951 (A.D. Taylor, 1916)

Partial stock list of everything pertaining to horticulture for 1907 : now in stock at the Universal Horticultural Establishment - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.A. Manda, 1907)

Partial stock list of everything pertaining to horticulture for 1905 now in stock at the Universal Horticultural Establishment - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.A. Manda, 1905)

Partial surplus list : field grown evergreens, shade trees, shrubs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hill Top Nurseries, 1948)

The passenger pigeon, its natural history and extinction - Schorger, A. W. (Arlie William), 1884 -1972 (University of Wisconsin Press, 1955)

Paxton's flower garden - Lindley, John, 1799 -1865 (Cassell, Petter, Galpin & Co, 1883)

Paxton's magazine of botany, and register of flowering plants - Paxton, Joseph, Sir, 1803 -1865 (Orr and Smith [etc.], 1836)

Pearls and pebbles; or, Notes of an old naturalist - Traill, Catherine Parr Strickland, 1802 -1899 (S. Low, Marston, 1895)

Pearls and pebbles, or, Notes of an old naturalist - Traill, Catherine Parr Strickland, 1802 -1899 (Wm. Briggs, 1895)

Perennials, rock-plants, roses, shrubs, evergreens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (William Turner's Sons, 1934)

Perennials, rock-plants, shrubs, evergreens, roses - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Turner Bros. Nursery, 1938)

Perennials, rock-plants, shrubs, evergreens, roses, 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Turner Bros. Nursery, 1936)

Perennials, rock-plants, shrubs, evergreens, roses, 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Turner Bros. Nursery, 1937)

Perennials, shrubs, trees, vines, ferns, espaliers : retail and wholesale list, 1941-1942 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tuttle Bros. Nurseries, 1941)

Periodical catalogue of fruit and ornamental trees and plants, cultivated at the Lake Erie Nurseries, Cleveland, Cuyahoga County, O - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Elliott & Co, 1846)

Periodical catalogue of fruit and ornamental trees and plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hopkins & Jennings, Printers, 1843)

Periodical catalogue of fruit and ornamental trees and plants : 1845 & 1846 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Joseph H. Jennings, Printer, 1845)

Die periodischen Erscheinungen der Reproduktion der Kiefer an der polaren Waldgrenze - Renvall, August, 1884 -1925 (J. Simelii arvingars boktr, 1912)

Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)

Pesticides monitoring journal - United States. Chemical Information Division. (Technical Services Division, Office of Pesticide Programs, U.S. Environmental Protection Agency, 1967)

Pfeiffer & Blackburn's wholesale catalogue & price list of fruit & ornamental trees, shrubs roses, border plants, and nursery seedling stocks, for autumn of 1861 and spring of 1862 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cincinnati Republican Print. Co, 1861)

Pflanzen-geographie auf physiologischer Grundlage - Schimper, A. F. W. (Andreas Franz Wilhelm), 1856 -1901 (Gustav Fischer, 1908)

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)

Pflanzenphysiologie als Theorie der Gärtnerei. Für Botaniker, Gärtner, Landwirte, Forstleute und Pflanzenfreunde - Molisch, Hans, 1856 -1937 (G. Fischer, 1922)

Pflanzenphysiologie. Ein Handbuch des Stoffwechsels und Kraftwechsels in der Pflanze - Pfeffer, W. (Wilhelm), 1845 -1920 (W. Engelmann, 1881)

Pflanzenphysiologie. Ein handbuch des stoffwechsels und kraftwechsels in der pflanze - Pfeffer, W. (Wilhelm), 1845 -1920 (W. Engelmann, 1881)

Pflanzenphysiologische Studien im Walde - Wagner, Max. (P. Parey, 1907)

Das Pflanzenreich :regni vegetablilis conspectus - Engler, Adolf, 1844 -1930 (W. Engelmann, 1916)

Das Pflanzenreich :regni vegetablilis conspectus - Engler, Adolf, 1844 -1930 (W. Engelmann, 1920)

Die Pflanzenwelt - Warburg, Otto, 1859 -1938 (Bibliographisches Institut, 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)