Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1991)

Plants of Mississippi : a list of flowering plants and ferns - Lowe, E. N. (Ephraim Noble), 1864 -1933 (Mississippi State Geological Survey, 1921)

The plants of Southern New Jersey; with especial reference to the flora of the Pine Barrens and the geographic distribution of the species - Stone, Witmer. 1866 -1939 (1911)

The plants of Southern New Jersey with especial reference to the flora of the pine barrens and the geographic distribution of the species - Stone, Witmer. 1866 -1939 (1911)

Pomologische Monotshefte - Lucas, Eduard, 1816 -1882 (E. Ulmer, 1874)

Ponderosa and Lodgepole Pine seedling bud burst varies with lift date and cultural practices in Idaho nursery - Intermountain Research Station (Ogden, Utah) (U.S. Dept. of Agriculture, Forest Service, Intermountain Research Station, 1991)

Population ecology of the spadefoot toad, Scaphiopus h. holbrooki ... - Pearson, Paul Guy, 1926 - (University of Florida, 1954)

Possibilities for improvement of western white pine by inbreeding / Richard T. Bingham - Intermountain Forest; Range Experiment Station (Ogden, Utah) (Intermountain Forest & Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1973)

Potassium, magnesium and calcium requirements of Virginia pine - Sucoff, Edward I. (Northeastern Forest Experiment Station, Forest Service, U.S. Department of Agriculture, 1962)

Practical forestry for beginners in forestry, agricultural students, woodland owners, and others desiring a general knowledge of the nature of the art - Gifford, John C. (John Clayton), 1870 -1949 (D. Appleton, 1902)

Practical forestry for beginners in forestry, agricultural students, woodland owners, and others desiring a general knowledge of the nature of the art - Gifford, John C. (John Clayton), 1870 -1949 (D. Appleton and company, 1902)

Practices for protecting and enhancing fish and wildlife on coal surface-mined land in central and southern Appalachia - United States. Bureau of Mines. (U.S. Department of the Interior, Fish and Wildlife Service, Division of Biological Services, Western Energy Land Use Team, 1983)

Practices for protecting and enhancing fish and wildlife on coal surface-mined land in the southcentral U.S - U.S. Fish; Wildlife Service. Office of Biological Services. (U.S. Department of the Interior, Fish and Wildlife Service, Office of Biological Services, 1983)

Predicting wood volumes for ponderosa pine from outside bark measurements - Pacific Northwest Forest; Range Experiment Station (Portland, Or.) (Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1976)

Preliminary study of forest conditions in Tennessee - Hall, R. Clifford. (McQuiddy printing company, 1910)

Price list, fall 1933-spring 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Eastern Shore Nurseries, Inc, 1933)

Price list, fall 1934-spring 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Eastern Shore Nurseries, Inc, 1934)

Price list, fall 1935-spring 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Eastern Shore Nurseries, Inc, 1935)

The principal species of wood: their characteristic properties - Snow, Charles H. (Charles Henry), 1863 - (J. Wiley & Sons; [etc., etc.], 1908)

Principles of American forestry - Green, Samuel Bowdlear, 1859 -1910 (J. Wiley & Sons, 1903)

Proceedings - American Forestry Association. (American Forestry Congress, 1882)

Proceedings : 20th Southern Forest Tree Improvement Conference, June 26-30, 1989 Charleston, South Carolina - Southern Forest Tree Improvement Committee. (Southern Forest Experiment Station, USDA Forest Service, 1989)

Proceedings, 22nd Southern Forest Tree Improvement Conference, June 14-17, 1993, Atlanta, Georgia - Southern Forest Tree Improvement Committee. (National Technical Information Service, 1993)

Proceedings, 23rd Southern Forest Tree Improvement Conference, June 20-22, 1995, Asheville, North Carolina - Southern Forest Tree Improvement Committee. (National Technical Information Service, 1995)

Proceedings and transactions of the Texas Academy of Science - Texas Academy of Science. (The Academy, 1941)

Proceedings, combined meeting of the Western Forest Nursery Associations : Western Forest Nursery Council, Forest Nursery Association of British Columbia, and Intermountain Forest Nursery Association : August 8-11, 1988, Vernon, British Columbia - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1988)

Proceedings, combined Western Forest Nursery Council and Intermountain Nursery Association meeting : August 12-15, 1986, Tumwater, Washington - Intermountain Nursery Association. (U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1986)

Proceedings, Conifer Tree Seed in the Inland Mountain West Symposium : Missoula, Montana, August 5-6, 1985 - Intermountain Research Station (Ogden, Utah) (U.S. Dept. of Agriculture, Forest Service, Intermountain Research Station, 1986)

Proceedings, Fifth Forest Insect and Disease Control Work Conference, Atlanta Cabana Motor Hotel, Atlanta, Georgia, February 17-19, 1970 - United States. Forest Service. (U.S. Forest Service, 1970)

Proceedings : growth and yield and other mensurational tricks ; a regional technical conference, Logan, Utah, November 6-7, 1984 - Intermountain Research Station (Ogden, Utah) (United States, Dept. of Agriculture, Forest Service, Intermountain Research Station, 1985)

Proceedings : Intermountain Forest Nursery Association : August 14-18, 1989, Bismarck, North Dakota - Landis, Thomas D. (U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1989)

Proceedings : Intermountain Nurseryman's Association meeting : August 13-15, 1985, Fort Collins, Colorado - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1986)

Proceedings : Mid-South Upland Hardwood Symposium for the Practicing Forester and Land Manager, Harrison, Arkansas, April 30-May 2, 1980 - Arkansas Forestry Commission. (s.n, 1980)

Proceedings of a conference : training in the control of Sirex noctilio by the use of natural enemies : Colombo, Brazil November 4 to 9, 1996 - Iede, Edson Tadeu (USDA, Forest Service, Forest Health Technology Enterprise Team, 1998)