The Plant world - Plant World Association. (Plant World Association [etc.], 1910)

The Plant world - Plant World Association. (Plant World Association [etc.], 1914)

The Plant world - Plant World Association. (Plant World Association [etc.], 1915)

The Plant world - Plant World Association. (Plant World Association [etc.], 1917)

The Plant world - Plant World Association. (Plant World Association [etc.], 1918)

The Plant world - Plant World Association. (Plant World Association [etc.], 1919)

Plantae bakerianae - Greene, Edward Lee, 1843 -1915 (s.n, 1901)

Plantæ Bakerianæ - Greene, Edward Lee, 1843 -1915 (s.n, 1901)

Plantae Bakerianae - Greene, Edward Lee, 1843 -1915 (s.n, 1901)

Plantae Lindheimerianae : an enumeration of F. Lindheimer's collection of Texan plants, with remarks and descriptions of new species, etc - Gray, Asa, 1810 -1888 (Printed by Freeman and Bolles, 1845)

Plantes toxiques du Canada - Mulligan, Gerald A., 1928 - (Agriculture Canada, 1990)

Planting guide : 1869-1954, 85th Anniversary - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Earl Ferris Nursery, 1954)

Planting guide : 1869-1955 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Earl Ferris Nursery, 1955)

Planting guide, 1956 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Earl Ferris Nursery, 1956)

Planting guide 1958 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Earl Ferris Nursery, 1958)

Planting method affects height growth of ponderosa pine in central Idaho - Intermountain Forest; Range Experiment Station (Ogden, Utah) (U.S. Dept. of Agriculture, Forest Service, Intermountain Forest & Range Experiment Station, 1970)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1948)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1952)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1969)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1977)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1982)

Plants and their environments proceedings of the first biennial scientific conference on the greater Yellowstone ecosystem - United States. National Park Service. (U.S. Dept. of the Interior, National Park Service, Natural Resources Publication Office, 1995)

Plants as a guide to mineralization - Carlisle, Donald. (1958)

Plants for California landscapes : a catalog of drought tolerant plants - California. Department of Water Resources. (State of California, Resources Agency, Dept. of Water Resources, 1979)

Plants from the Swauk - Sharples, Stephen Paschall, 1842 -1923 (1913)

Plants of Monroe County, New York, and adjacent territory : second supplementary list - Baxter, Milton S. (Rochester Academy of Science, 1917)

Plants of the Arizona chaparral - Carmichael, R. S. (Robert S.) (Rocky Mountain Forest and Range Experiment Station, 1979)

Plants of the Seven Devils Mountains of Idaho : an annotated checklist - Intermountain Forest; Range Experiment Station (Ogden, Utah) (U.S. Dept. of Agriculture, Forest Service, Intermountain Research Station, 1987)

Plants of west-central Montana : identification and ecology : annotated checklist - Intermountain Research Station (Ogden, Utah) (U.S. Dept. of Agriculture, Forest Service, Intermountain Research Station, 1986)

The Pliocene Verdi flora of western Nevada - Axelrod, Daniel I. (University of California Press, 1958)

Plumas Lassen Study : 2006 annual report - Sierra Nevada Research Center (U.S.) (USDA Forest Service Pacific Southwest Research Station, Sierra Nevada Research Center, 2006)

Pocket gopher food habits on two disturbed forest sites in central Arizona - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1984)

Poisoning and trapping pocket gophers to protect conifers in northeastern Oregon - United States. Forest Service. (Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service, 1979)

Poisonous plants of Canada - Mulligan, Gerald A., 1928 - (Agriculture Canada, 1990)

Poisonous plants of the Canadian prairies - Canada. Department of Agriculture. (Research Branch, Canada Dept. of Agriculture, 1961)

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, 1909)

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)

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)

Ponderosa pine - Betts, Harold S. (U.S. Dept. of Agriculture, Forest Service, 1945)

Ponderosa pine - United States. Forest Service. (U.S. Dept. of Agriculture, Forest Service, 1973)

Ponderosa pine bibliography through 1965 - Roe, Arthur L. (Arthur Lawrence), 1909 -2006 (U.S. Intermountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1967)

Ponderosa pine dwarf mistletoe loss assessment survey on National Forest lands in Colorado - Johnson, David W. (David Winslow), 1940 - (U.S. Forest Service, Rocky Mountain Region, Timber, Forest Pest, and Cooperative Forestry Management, 1984)

A ponderosa pine-grand fir spacing study in central Oregon : results after 10 years - Pacific Northwest Forest; Range Experiment Station (Portland, Or.) (U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1985)

A ponderosa pine-lodgepole pine spacing study in central Oregon : results after 20 years - Pacific Northwest Research Station (Portland, Or.) (U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1989)

Ponderosa pine mortality resulting from a mountain pine beetle outbreak - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1982)

Ponderosa pine provenances for the northern Great Plains - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1980)

Ponderosa pine saplings respond to control of spacing and understory vegetation - Barrett, James W. (James Willis), 1922 - (Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, 1970)

Ponderosa pine seed : for animals or trees? - Intermountain Forest; Range Experiment Station (Ogden, Utah) (Intermountain Forest & Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1971)

Popular deciduous and evergreen trees and shrubs, for planting in parks, gardens, cemetries, etc., etc - Elliott, F. R. (Franklin Reuben), 1817 -1878 (American News Co, 1868)

Popular deciduous and evergreen trees and shrubs, for planting in parks, gardens, cemeteries, etc., etc - Elliott, F. R. (Franklin Reuben), 1817 -1878 (G. E. Woodward, 1868)

Popular deciduous evergreen trees and shrubs, for planting in parks, gardens, cemetaries, etc., etc - Elliott, F. R. (Franklin Reuben), 1817 -1878 (American News Co, 1868)

Popular gardening and fruit growing; An illustrated periodical devoted to horticulture in all its branches (Popular gardening publishing company, 1886)

Popular gardening and fruit growing; An illustrated periodical devoted to horticulture in all its branches (Popular gardening publishing company, 1890)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1883)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1890)

Population dynamics of the major North American needle-eating budworms - Campbell, Robert W. (1993)

A population study of the Rocky Mountain bighorn sheep (Ovis canadensis canadensis Shaw) on Wildhorse Island - Montana Fish; Game Commission. Wildlife Restoration Division. (Montana Fish and Game Commission, Wildlife Restoration Division, 1954)

Possibilities of western pines as a source of naval stores - Betts, Harold S. (U.S. Dept. of Agriculture, Forest Service, 1912)

Potential for producing ponderosa pine plywood in the Black Hills - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S.D.A, 1981)

Powderhorn wilderness management plan/area analysis, implementation schedule, environmental assessment, and finding of no significant action/decision record - United States. Forest Service. (U.S. Department of the Interior, Bureau of Land Management, Gunnison Resource Area, 1995)

Practical arboriculture; how forests influence climate, control the winds, prevent floods, sustain national prosperity, a text book for railway engineers, manufacturers, lumbermen and farmers - Brown, John Pinkney, 1842 -1915 ([Hennebery Press], 1906)

Practical arboriculture; how forests influence climate, control the winds, prevent floods, sustain national prosperity; a text book for railway engineers, manufacturers, lumbermen and farmers. How, where and what to plant for the rapid production of lumber, cross-ties, telegraph poles and other timbers, with original photographs by the author - Brown, John Pinkney, 1842 -1915 ([The Henneberry press, Chicago], 1906)

Practical botany - Bergen, Joseph Y. (Joseph Young), 1851 -1917 (Ginn and company, 1911)

Practical botany - Bergen, Joseph Y. (Joseph Young), 1851 -1917 (Ginn, 1911)

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)

Practical forestry in the Pacific northwest : protecting existing forests and growing new ones, from the standpoint of the public and that of the lumberman, with an outline of technical methods - Western Forestry; Conservation Association (U.S.) (Issued by the Western Forestry & Conservation Association, Office of the Forester, 421 Yeon Building, Portland, Oregon, 1911)

Practical forestry in the Pacific northwest; protecting existing forests and growing new ones, from the standpoint of the public and that of the lumberman, with an outline of technical methods - Western forestry; conservation association. (Issued by the Western forestry & conservation association, 1911)

Practical forestry in the Pacific northwest; protecting existing forests and growing news ones, from the standpoint of the public and that of the lumberman, with an outline of technical methods - Allen, Edward Tyson, 1875 - (Western Forestry & Conservation Association, 1911)

A practical guide to garden plants, containing descriptions of the hardiest and most beautiful annuals and biennials, hardy herbaceous and bulbous perennials, hardy water and bog plants, flowering and ornamental trees and shrubs, conifers; hardy ferns; hardy bamboos and other ornamental grasses. Also the best kinds of fruits and vegetables that may be grown in the open air in the British Isles with full and practical instruction as to culture and propagation - Weathers, John, 1867 -1928 (Longmans, Green, 1901)