The potentialities of revegetating and utilizing agronomic species on strip mined areas in Illinois - University of Illinois at Urbana-Champaign. Agricultural Experiment Station. (University of Illinois, Agricultural Experiment Station, 1947)

Pozsonyi Orvos-Termeszettudomanyi Egyesulet Kozlemenyei - Verein für natur- und heilkunde, Pressburg (1894)

PPQ foreign-site technical packet for New Zealand - United States. Animal; Plant Health Inspection Service. Plant Protection; Quarantine Programs. (PPQ, APHIS, USDA,], 1985)

Practical crop protection - Alberta. Soil; Crop Management Branch. (Alberta Agriculture, Food and Rural Development, 1994)

Practical farming; a plain book on treatment of the soil and crop production; especially designed for the everyday use of farmers and agricultural students - Massey, Wilbur Fisk, 1839 -1923 (The Outing publishing company, 1907)

Practical farming; a plain book on treatment of the soil and crop production - Massey, Wilbur Fisk, 1839 -1923 (The Outing publishing company, 1907)

Practical observations on agricultural grasses and other pasture plants - Wilson, William, junior. (Simpkin, Marshall, & Co, 1889)

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

Practical plant biochemistry - Onslow, Muriel Wheldale 1880 -1932 (University Press, 1920)

Practical plant biochemistry - Onslow, Muriel Wheldale 1880 -1932 (University press, 1920)

A practical treatise on grasses and forage plants: comprising their natural history, comparative nutritive value, methods of cultivating, cutting and curing, and management of grass lands - Flint, Charles Louis, 1824 -1889 (G. P. Putnam, 1857)

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)

Prairie chickens on the Sheyenne National Grasslands : September 18, 1987, Crookston, Minnesota - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1988)

Prairie Coulees Natural Area : management plan - Alberta. Alberta Community Development. (Alberta Sustainable Resource Development, Public Lands, 2000)

A preliminary catalogue of the flora of Vancouver and Queen Charlotte Islands - British Columbia Provincial Museum. (Printed by W. H. Cullin, 1921)

Preliminary list of plants growing without cultivation in the vicinity of Manchester, New Hampshire - Batchelder, Frederick William. (Manchester institute of arts and sciences, 1909)

A preliminary list of the parasitic fungi of Idaho - United States. Division of Mycology; Disease Survey. (Division of Mycology and Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1936)

A preliminary list of the Uredinales of California - Blasdale, Walter Charles, 1871 -1960 (University of California press, 1919)

A preliminary list of the vascular flora of Allegheny County, Pennsylvania - Shafer, John Adolph, 1863 -1918 (Carnegie Institute Museum?, 1901)

Preliminary report on the alfalfa weevil. [Phytonomus posticus] - Webster, F. M. (Francis Marion), 1849 -1916 (Govt. print. off, 1912)

Prescribed fire and cattle grazing influences on the vegetation and elk use of a rough fescue community - Jourdonnais, Craig S. (1985)

Price list and descriptive catalogue for 1909 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Barteldes Seed Co, 1909)

Price list of agricultural seeds, and treatise on permanent pasture grasses and the adulteration of their seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (James Hunter, 1910)

Prima lineae florae Herbipolensis - Lehmann, Johann Friedrich. (Nitribitt, 1809)

Principia botanica: or, a concise and easy introduction to the sexual botany of Linnaeus ... - Linné, Carl von, 1707 -1778 (Printed by Allin and co. and sold by G. G. J. and J. Robinson, London, 1787)

Principia botanica: or, A concise and easy introduction to the sexual botany of Linnaeus ... Arranged in a tabular form, under each class and order; and digested alphabetically under several generic distinctions. Together with three indexes ... Also a table of several vegetable drugs not in the indexes ... - Darwin, Robert Waring, 1724 -1816 (Printed and sold by M. Hage; [etc., etc.], 1810)

The principles of agriculture; a text-book for schools and rural societies - Bailey, L. H. (Liberty Hyde), 1858 -1954 (Macmillan, 1913)

The principles of agronomy; a text-book of crop production for high-schools and short-courses in agricultural colleges - Harris, Franklin Stewart, 1884 -1960 (The Macmillan company, 1915)

Principles of biochemistry for students of medicine, agriculture and related sciences - Robertson, T. Brailsford (Thorburn Brailsford), 1884 -1930 (Lea & Febiger, 1920)

The principles of plant-teratology - Worsdell, Wilson Crosfield (The Ray Society, 1915)

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

Prirodoslovna istraživanja - Jugoslavenska akademija znanosti i umjetnosti. (1916)

Proceedings. - Entomological Society of Ontario. (1887)

Proceedings - Dorset Natural History; Archaeological Society.

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, 1999)

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

Proceedings and transactions of the British Entomological and Natural History Society - British Entomological; Natural History Society. (British Entomological and Natural History Society, 1978)

Proceedings and transactions of the British Entomological and Natural History Society - British Entomological; Natural History Society. (British Entomological and Natural History Society, 1980)

Proceedings and transactions of the Natural History Society of Glasgow - Natural History Society of Glasgow. (The Society, 1886)

Proceedings and transactions of the Natural History Society of Glasgow - Natural History Society of Glasgow. (The Society, 1889)

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, 1906)

Proceedings and transactions of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (The Society, 1953)

Proceedings and transactions of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (The Society, 1965)

Proceedings - Cambridge Philosophical Society. Mathematical and physical sciences - Cambridge Philosophical Society. (Cambridge Philosophical Society [etc.], 1892)

Proceedings - Cambridge Philosophical Society. Mathematical and physical sciences - Cambridge Philosophical Society. (Cambridge Philosophical Society [etc.], 1900)

Proceedings - Cambridge Philosophical Society. Mathematical and physical sciences - Cambridge Philosophical Society. (Cambridge Philosophical Society [etc.], 1910)

Proceedings - Cambridge Philosophical Society. Mathematical and physical sciences - Cambridge Philosophical Society. (Cambridge Philosophical Society [etc.], 1917)

Proceedings - Dorset Natural History and Archaeological Society - Dorset Natural History; Archaeological Society. (1877)

Proceedings of the 1984 Western States and Provinces Elk Workshop, April 17-19, 1984, Edmonton, Alberta - Alberta. Fish; Wildlife Division. (Wildlife Branch, Fish and Wildlife Division, 1985)

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 43rd Southern Pasture and Forage Crop Improvement Conference, held at Clemson, South Carolina, April 20-22, 1987 - United States. Agricultural Research Service. (U.S. Dept. of Agriculture, Agricultural Research Service, 1987)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1877)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1911)

Proceedings of the American Society of Agronomy - American Society of Agronomy. (The Society, 1918)

Proceedings of the American Society of Agronomy - American Society of Agronomy. (The Society, 1919)

Proceedings of the American Society of Agronomy - American Society of Agronomy. (The Society, 1920)

Proceedings of the annual convention of the society of American Florists - Society of American Florists; Ornamental Horticulturists. (Society of American Florists and Ornamental Horticulturalists, 1885)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1987)

Proceedings of the Boston Society of Natural History - Boston Society of Natural History. (Boston Society of Natural History, 1856)

Proceedings of the Boston Society of Natural History - Boston Society of Natural History. (Boston Society of Natural History, 1923)

Proceedings of the Botanical Society of London - Botanical Society of London. (1839)

Proceedings of the Botanical Society of the British Isles - Botanical Society of the British Isles. (1954)

Proceedings of the Botanical Society of the British Isles - Botanical Society of the British Isles. (1956)

Proceedings of the Botanical Society of the British Isles - Botanical Society of the British Isles. (1960)

Proceedings of the Botanical Society of the British Isles - Botanical Society of the British Isles. (1963)

Proceedings of the Botanical Society of the British Isles - Botanical Society of the British Isles. (1965)

Proceedings of the Botanical Society of the British Isles - Botanical Society of the British Isles. (1967)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1882)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1917)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1976)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1979)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1988)

Proceedings of the California Academy of Natural Sciences - California Academy of Natural Sciences (The Academy, 1863)

Proceedings of the California Academy of Sciences. 3rd ser., Botany - California Academy of Sciences (The Academy, 1897)

Proceedings of the California Academy of Sciences. 3rd ser., Botany - California Academy of Sciences (The Academy, 1900)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1953)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1968)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1979)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1982)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 2018)

Proceedings of the Cotteswold Naturalists' Field Club - Cotteswold Naturalists' Field Club. (1915)

Proceedings of the Davenport Academy of Natural Sciences - Davenport Academy of Natural Sciences. (Academy of Natural Sciences [etc.], 1897)

Proceedings of the ... Eastern Native Grass Symposium - United States. Natural Resources Conservation Service. (Agricultural Research Service, Natural Resources Conservation Service, 1997)

Proceedings of the Entomological Society of British Columbia - Entomological Society of British Columbia (Entomological Society of British Columbia, 1952)

Proceedings of the Entomological Society of Ontario - Entomological Society of Ontario. (Entomological Society of Ontario, 1969)

Proceedings of the Entomological Society of Ontario - Entomological Society of Ontario. (Entomological Society of Ontario, 1974)

Proceedings of the Entomological Society of Ontario - Entomological Society of Ontario. (Entomological Society of Ontario, 1978)

Proceedings of the Entomological Society of Ontario - Entomological Society of Ontario. (Entomological Society of Ontario, 1985)

Proceedings of the Entomological Society of Ontario - Entomological Society of Ontario. (Entomological Society of Ontario, 1984)

Proceedings of the Entomological Society of Ontario - Entomological Society of Ontario. (Entomological Society of Ontario, 1987)