Die pilze in morphologischer, physiologischer, biologischer und systematischer beziehung - Zopf, W. (Wilhelm), 1846 -1909 (E. Trewendt, 1890)

Plant disease forecasting : a symposium - United States. Plant Disease Survey. (Plant Disease Survey, Division of Mycology and Disease Survey, Bureau of Plant Industry, Soils, and Agricultural Engineering, Agricultural Research Administration, United States Department of Agriculture, 1950)

Plant disease Fungi - Stevens, Frank Lincoln, 1871 -1934 (The Macmillan company, 1925)

Plant disease losses : their appraisal and interpretation - United States. Plant Disease Survey. (Plant Disease Survey, Division of Mycology and Disease Survey, Bureau of Plant Industry, Soils, and Agricultural Engineering, Agricultural Research Administration, United States Department of Agriculture, 1950)

The plant disease reporter - United States. Bureau of Plant Industry. (Bureau of Plant Industry, U.S. Dept. of Agriculture, 1942)

Plant disease surveys in the Northeastern United States in 1943 - United States. Plant Disease Survey. (Plant Disease Survey, Division of Mycology and Disease Survey, Bureau of Plant Industry, Soils, and Agricultural Engineering, Agricultural Research Administration, United States Department of Agriculture, 1944)

Plant disease surveys in the Southeastern United States in 1943 - United States. Plant Disease Survey. (Plant Disease Survey, Division of Mycology and Disease Survey, Bureau of Plant Industry, Soils, and Agricultural Engineering, Agricultural Research Administration, United States Department of Agriculture, 1944)

Plant disease surveys in the Western United States in 1943 - United States. Plant Disease Survey. (Plant Disease Survey, Division of Mycology and Disease Survey, Bureau of Plant Industry, Soils, and Agricultural Engineering, Agricultural Research Administration, United States Department of Agriculture, 1944)

Plant disease training manual - Montana. Department of Agriculture (The Dept, 1981)

The plant disease warning service in 1950 - United States. Plant Disease Survey. (Plant Disease Survey, Division of Mycology and Disease Survey, Bureau of Plant Industry, Soils, and Agricultural Engineering, Agricultural Research Administration, United States Department of Agriculture, 1950)

The plant disease warning service in 1951 - United States. Plant Disease Survey. (Plant Disease Survey, Division of Mycology and Disease Survey, Bureau of Plant Industry, Soils, and Agricultural Engineering, Agricultural Research Administration, United States Department of Agriculture, 1951)

Plant diseases of international importance - Kumar, Jatinder (Prentice Hall, 1900)

Plant growth substances - University of Wisconsin. (University of Wisconsin Press, 1951)

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

Plant pathological investigation in the United States - United States. Plant Disease Survey. (Plant Disease Survey, Division of Mycology and Disease Survey, Bureau of Plant Industry, Soils, and Agricultural Engineering, Agricultural Research Administration, United States Department of Agriculture, 1950)

Plant pathological investigation in the United States II - United States. Plant Disease Survey. (Plant Disease Survey, Division of Mycology and Disease Survey, Bureau of Plant Industry, Soils, and Agricultural Engineering, Agricultural Research Administration, United States Department of Agriculture, 1950)

Plant-quarantine import restrictions of New Zealand - United States. Office of Experiment Stations. (United States Department of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1949)

Planting in Uganda. Coffee–Para rubber–cocoa - Brandsten, Gustav Fredrik. (Longmans, Green & co.; [etc., etc.], 1913)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1955)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1976)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1988)

Plants in health and disease : being an abstract of a course of lectures delivered in the University of Manchester during the session 1915-16 - Imms, A. D. (Augustus Daniel), 1880 -1949 (University Press, 1916)

Plants in health and disease, being an abstract of a course of lectures delivered in the University of Manchester during the session 1915/16 - Imms, A. D. (Augustus Daniel), 1880 -1949 (The University press, 1916)

The potato - Dean, Daniel (The Macmillan Company, 1917)

The potato - Dean, Daniel (Macmillan, 1917)

Potato diseases in Hawaii and their control - Carpenter, C. W. (Clarence Willard), 1888 -1946 (U.S. G.P.O, 1920)

The potato in field and garden - Malden, Walter James, 1857 - (W.A. May, 1895)

The potato; a practical treatise on the potato, its characteristics, planting, cultivation, harvesting, storing, marketing, insects, and diseases and their remedies, etc., etc - Fraser, Samuel, 1876 -1959 (O. Judd company, 1905)

The potato; a practical treatise on the potato, its characteristics, planting, cultivation, harvesting, storing, marketing, insects, and diseases and their remedies, etc., etc - Fraser, Samuel, 1876 -1959 (Orange Judd company, 1905)

Potato wilt, leaf-roll, and related diseases - Orton, W. A. (William Allen), 1877 -1930 (U.S. Dept. of Agriculture, 1914)

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 botany for beginners - Bower, F. O. (Frederick Orpen), 1855 -1948 (1894)

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)

Practical plant physiology : an introduction to original research for students and teachers of natural science, medicine, agriculture and forestry - Detmer, W. (Wilhelm), 1850 -1930 (S. Sonnenschein, 1898)

The practice of forestry, concerning also the financial aspect of afforestation - Maw, Percival Trentham. (T.F. Unwin, 1909)

The practice of forestry : concerning also the financial aspects of afforestation - Maw, Percival Trentham. (T. F. Unwin, 1909)

Preliminary draft, Josephine timber management environmental statement - United States. Bureau of Land Management. Oregon State Office. (U.S. Department of the Interior, Bureau of Land Management, Oregon State Office, 1977)

Principles of botany - Bergen, Joseph Y. (Joseph Young), 1851 -1917 (Ginn, 1906)

The principles of plant culture; a text for beginners in agriculture and horticulture - Jones, L. R. (Lewis Ralph), 1864 -1945 (Macmillan, 1916)

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 (University Co-operative Co, 1912)

Principles of soil microbiology - Waksman, Selman A. (Selman Abraham), 1888 -1973 (Williams & Wilkins, 1927)

The principles of vegetable-gardening - Bailey, L. H. (Liberty Hyde), 1858 -1954 (The Macmillan company, 1921)

Proceedings - University of Illinois at Urbana-Champaign. College of Agricultural, Consumer; Environmental Sciences. (University of Illinois at Urbana-Champaign, College of Agricultural, Consumer and Environmental Sciences, University of Illinois Extension, 2002)

Proceedings and transactions of the Natural History Society of Glasgow - Natural History Society of Glasgow. (The Society, 1892)

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, 1922)

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 of the 1st joint meeting of the 12th National Symposium on Forest Parasites and the 54th Western Forest Insect Work Conference (WFIWC) Guadalajara, Mexico, November 3-6, 2003 : enhancing our parnerships - Steed, Brytten E. (USDA Forest Service, 2003)

Proceedings of the 36th Southern Pasture and Forage Crop Improvement Conference : May 1-3, 1979, Beltsville, Maryland - Auburn University. Agricultural Experiment Station. (Agricultural Research (Southern Region), Science and Education Administration, U.S. Dept. of Agriculture, 1979)

Proceedings of the First Agricultural Conference, Malaya, held at the Chamber of Commerce, Kuala Lumpur, April 25th to 28th, 1917 : including the papers contributed to the conference and reports of the discussions - Bunting, B. (Benjamin) (Printed at the Federated Malay States Govt. Print. Office, 1917)

Proceedings of the Indiana Academy of Science - Indiana Academy of Science. ([s.n.], 1922)