The Phytologist: a popular botanical miscellany - Newman, Edward, 1801 -1876 (John van Voorst, 1841)

Phytoneuron (Guy L. Nesom, 2012)

Phytoneuron (Guy L. Nesom, 2015)

Phytoneuron (Guy L. Nesom, 2018)

Phytoneuron (Guy L. Nesom, 2019)

Die Pilze Böhmens - Bubák, František, 1866 -1925 (In Commission bei F. ivna, 1908)

Die Pilze Schlesiens - Schroeter, J. (J.U. Kern's Verlag, 1889)

Pioneer Seed House, nursery & greenhouse of the Northwest, 1883-1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Oscar H. Will & Co, 1928)

The plain truth about seeds : Burpee's 1899 farm annual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W. Atlee Burpee & Co, 1899)

Plant & eat vegetables for health : 1936, forty-third annual catalog - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Aggeler & Musser Seed Co, 1936)

Plant associations of region two : potential plant communities of Wyoming, South Dakota, Nebraska, Colorado, and Kansas - Johnston, Barry C. (USDA Forest Service, Rocky Mountain Region, 1987)

Plant communities of the Blue Mountains in eastern Oregon and southeastern Washington - United States. Forest Service. (U.S.D.A. Forest Service, Pacific Northwest Region, 1973)

The plant community - Churchill, Ethan D. (Reinhold Pub. Corp, 1961)

Plant community types of sand dunes and sand plains in selected areas of the boreal natural region - Alberta. Alberta Sustainable Resource Development. (The Company, 2005)

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

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

Plant Gene Resources of Canada, list of species available for seed exchanges = Les Ressources phytogénétiques du Canada, liste d'espèces (graines) offertes en échange - Baillargeon, Guy, 1953 - (Agriculture Canada, Research Branch, 1991)

Plant indicators: the relation of plant communities to process and practice - Clements, Frederic E. (Frederic Edward), 1874 -1945 (Carnegie Institution of Washington, 1920)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1923)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1929)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1934)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1942)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1951)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1956)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1958)

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

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1967)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1968)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1969)

Plant list, common names, Nevada - United States. Soil Conservation Service. (1964)

Plant list of Waterloo County - Montgomery, F. H. (Frederick Howard), 1902 - (1943)

Plant lists : North America - Palmer, Ernest J. (Ernest Jesse), 1875 -1962 (1921)

Plant materials for use on surface-mined lands in arid and semiarid regions - United States. Soil Conservation Service. (Soil Conservation Service : for sale by the Supt. of Docs., U.S. G.P.O, 1982)

Plant morphogenesis as the basis for scientific management of range resources : Proceedings of the workshop of the United States-Australia Rangelands Panel, Berkeley, California, March 29-April 5, 1971 - United States-Australia Rangelands Panel. Workshop Berkeley, Calif.) 1971 - (Agricultural Research Service, U.S. Dept. of Agriculture, 1974)

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 reliable seeds in 1913 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Chesmore Seed Co, 1913)

Plant responses to salinity : an indexed bibliography (Office of the Regional Administrator for Agricultural Research (Western Region), Science and Education Administration, U.S. Department of Agriculture, 1978)

Plant sturdy seeds. 1919 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weeber & Don, 1919)

Plant sturdy seeds : 1920 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weeber & Don, 1920)

The Plant world - Plant World Association. (Plant World Association [etc.], 1909)

The Plant world - Plant World Association. (Plant World Association [etc.], 1911)

Plantae Scandinaviae; descriptionibus et figuris analyticis adumbratae - Andersson, N. J. (Nils Johan), 1821 -1880 (Sumptibus Z. Haeggström, 1849)

Plantarum indigenarum et exoticarum icones ad vivum coloratae, oder, Sammlung nach der Natur gemalter Abbildungen inn- und ausländlischer Pflanzen, für Liebhaber und Beflissene der Botanik - Lukas Hochenleitter und Kompagnie. (1790)

Las Plantas forrajeras : indígenas y cultivadas de la República Argentina : primera contribución - Universidad de Buenos Aires. Facultad de Agronomía y Veterinaria. (Talleres S.A. Casa Jacobo Peuser, 1923)

Plantas Romaniae hucusque cognitas - Kanitz, Ágost, 1843 -1896 (Apud E. Demjén, 1879)

Plantes fourragères prairies et pâturages - Malte, M. O. (Malte Oscar), 1880 -1933 (Impr. du gouvernement, 1913)

Plantes fourragères prairies et pâturages - Malte, M. O. (Malte Oscar), 1880 -1933 (Ministre de l'Agriculture, 1913)

Plants of Iowa; a preliminary list of the native and introduced plants of the state, not under cultivation - Greene, Wesley. (Bishard brothers, printers, 1907)

The plants of Prince Edward Island - Erskine, D. S. (David Sterling) (Research Branch, Agriculture Canada, 1985)

The plants of Prince Edward Island - Erskine, D. S. (David Sterling) (Plant Research Institute, Research Branch, Canada Dept. of Agriculture, 1960)

Plants of Riding Mountain National Park, Manitoba - Canadian Parks Service. (Research Branch, Agriculture Canada, 1988)

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 the U.S. Military Academy, West Point, New York - Barringer, Kerry Alan (Brooklyn Botanic Garden, 1990)

Platt's 1950 : beauty and abundance from your own garden - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Frank S. Platt Co, 1950)

Platt's seeds 1877-1952, our 75th anniversary - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Frank S. Platt Co., Seedsmen, 1952)

Platt's seeds 1951 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Frank S. Platt Co, 1951)

Platt's seeds 1953 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Frank S. Platt Co., Seedsmen, 1953)

A pocket botanical dictionary; comprising the names, history, and culture of all plants known in Britain; with a full explanation of technical terms - Lindley, John, 1799 -1865 (J. Andrews, 1840)

Polychlorinated biphenyl hazards to fish, wildlife, and invertebrates : a synoptic review - U.S. Fish; Wildlife Service (The Service, 1986)

Poole's Seed & Implement Co. [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Poole's Seed & Implement Co, 1926)

Poole's seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Poole's Seed & Implement Co, 1930)

Popular science news, formerly Boston journal of chemistry. A popular illustrated monthly devoted to the progress in zoology, botany, mineralogy, archaeology, hygiene, invention, with related physical sciences and general scientific information - Agassiz Association. (J.R. Nichols & co. [etc.], 1866)

Population status and ecology of trembling aspen and black cottonwood communities on the Blackfeet Indian Reservation - U.S. Fish; Wildlife Service (Montana Natural Heritage Program, 1997)

Porter-Walton's garden book - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Porter-Walton Co, 1949)

Porter-Walton's garden book for 1950 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Porter-Walton Co, 1950)

Porter-Walton's garden book for 1953 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Porter-Walton Co, 1953)

Porter-Walton's seed and nursery book for 1920-21 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Porter-Walton Co, 1920)

Porter-Walton's seed and nursery book for 1923 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Porter-Walton Co, 1923)

Portland Seed Company 44th seedalog - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Portland Seed Company, 1936)

Portland Seed Company complete seed annual, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Portland Seed Company, 1929)

Portland Seed Company's Catalog and seed annual for 1924 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Portland Seed Co, 1924)

Portland Seed Company's Catalog and seed annual for 1925 - G.E. Conkey Company. (Portland Seed Co, 1925)

Portland Seed Company's Catalog and seed annual for 1926 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Portland Seed Company, 1926)

Portland Seed Company's complete catalog and seed annual for 1921 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Portland Seed Co, 1921)

Portland Seed Company's complete seed annual. No. 65 for 1910 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Portland Seed Co, 1910)

Portland Seed Company's complete seed annual and planters guide for 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Portland Seed Company, 1928)

Portland Seed Company's complete seed annual for 1919 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Portland Seed Company, 1919)

Portland Seed Company's complete seed annual for 1920 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Portland Seed Co, 1920)

Potato leaf roll and its insect vectors in the Edmonton District - University of Alberta. Dept. of Entomology. ([University of Alberta], 1945)

The potential and current vegetation of the Sun River Game Range - Montana. Department of Fish, Wildlife,; Parks (Montana Dept. of Fish, Wildlife and Parks, 1980)

Potential impact of proposed noxious weed treatment at Bluewater Fish Hatchery (MDFWP) on plant species of special concern - Montana Natural Heritage Program. ([Montana Natural Heritage Program], 1994)

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)

The poultryman's handbook; a convenient reference book for all persons interested in the production of eggs and poultry for marketing and the breeding of stardard-bred poultry for exhibition - International Correspondence Schools. (International textbook company, 1920)

The poultryman's handbook; a convenient reference book for all persons interested in the production of eggs and poultry for market and the breeding of standardbred poultry for exhibition - International Correspondence Schools. (International textbook company, 1912)

The poultryman's handbook; a convenient reference book for all persons interested in the production of eggs and poultry for market and the breeding of standardbred poultry for exhibition - International Correspondence Schools. (International textbook company, 1920)

Pozsonyi Orvos-Termeszettudomanyi Egyesulet Kozlemenyei - Verein für natur- und heilkunde, Pressburg (1884)

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 notes on grasses & grass growing in East Anglia - Everitt, Nicholas. (Jarrold, 1897)

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

Practical seeds for practical farmers : seeds for profit and seeds for pleasure - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lake View Seed Gardens, 1904)

Prairie agriculture containing a list of chemical experiments; a series of experiments on the growth of seeds; a description of how plants grow; a sketch of the formation of the prairie soil by water and ice action; an account of farming operations and of crops adapted to Manitoba; a description of diseases of crops, of insects, and of birds; an account with illustrations of the breeds of horses, cattle, sheep, swine and poultry adapted to Manitoba; advantages of mixed farming (Consolidated Stationery Co, 1899)

Preliminary classification of native wheat grass (Agropyron spp.) community types in Alberta - Alberta. Alberta Environment. (Geowest Environmental Consultants Ltd, 2001)

A preliminary classification of plant communities in the central Parkland natural sub-region of Alberta - Alberta. Alberta Sustainable Resource Development. (Geowest Environmental Consultants Ltd, 2002)

A preliminary classification of the Rocky Mountain shrubland communities of Alberta - Alberta. Alberta Environment. (Alberta Environment, 2000)

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)

Preliminary plant associations of the Southern Oregon Cascade Mountain province - Atzet, Thomas. (U.S.D.A. Forest Service, Pacific Northwest Region, Siskiyou National Forest, 1990)

A preliminary report on the biology of Harding County, northwestern South Dakota - Visher, Stephen Sargent, 1887 -1967 (State Publishing Co, 1914)

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

Price list and catalog : 1914 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Darrow Bros. Seed & Supply Company, 1914)

Price list and descriptive catalogue 1905 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Barteldes & Co, 1905)

Price list and descriptive catalogue 1906 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Barteldes & Co, 1906)

Price list and descriptive catalogue 1907 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Barteldes Seed Co, 1907)

Primitiae florae essequeboensis adjectis descriptionibus centum circiter stirpium novarum, observationibusque criticis - Meyer, G. F. W. (Georg Friedrich Wilhelm), 1782 -1856 (Sumptibus H. Dieterich, 1818)

Principal poisonous plants of Canada - Fyles, Faith, 1875 -1961 (Dept. of Agriculture, Dominion Experimental Farms, 1920)

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)

The principles of soil management - Lyon, T. L. (Thomas Lyttleton), 1869 -1938 (Macmillan, 1910)

The principles of soil management - Lyon, T. L. (Thomas Lyttleton), 1869 -1938 (The Macmillan company, 1909)

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

Proceedings, land classifications based on vegetation : applications for resource management : Moscow, ID, November 17-19, 1987 - Intermountain Research Station (Ogden, Utah) (U.S. Dept. of Agriculture, Forest Service, Intermountain Research Station, 1989)

Proceedings : National Wilderness Research Conference, current research, Fort Collins, CO, July 23-26, 1985 - Intermountain Research Station (Ogden, Utah) (Intermountain Research Station, 1986)

Proceedings of the American Society of Agronomy - American Society of Agronomy. (The Society, 1910)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1902)