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

Plantae Bequaertianae; études sur les récoltes botaniques du Dr. J. Bequaert, chargé de missions au Congo Belge (1913-1915) - Wildeman, E. de (Emile), 1866 -1947 (A. Hoste; [etc., etc.], 1921)

Plantae Europeae.Enumeratio systematica et synonymica plantarum phaenerogamicarum in Europa sponte crescentium vel mere inquilinarum - Richter, Karl, 1855 -1891 (W. Engelmann, 1890)

Plantae quaedam niloticae : quas in itinere cum divo Adalberto libero barone de Barnim facto collegit Robertus Hartmann - Schweinfurth, Georg August, 1836 -1925 (G. Reimer, 1862)

Plantae Thunbergianae : ein Verzeichnis der von C. P. Thunberg in Südafrika, Indien und Japan gesammelten und der in seinen Schriften beschriebenen oder erwähnten Pflanzen, sowie von den Exemplaren derselben, die im Herbarium Thunbergianum in Upsala aufbewahrt sind - Thunberg, Carl Peter, 1743 -1828 (A.-b. Akademiska bokhandeln, 1918)

Plantas de la Amazonía peruana : clave para identificar las familias de Gymnospermae y Angiospermae - Vásquez Martínez, Rodolfo (Museo de Historia Natural, 2004)

Planterester i Norske torvmyrer : et bidrag til den norske vegetations historie efter den sidste istid - Holmboe, Jens 1880 -1943 (J. Dybwad, A.W. Brøggers boktr, 1903)

Les plantes vasculaires rares du Canada : notre patrimoine naturel - Argus, George W. (George William) (Programme des plantes rares et menacées, Musée canadien de la nature, 1990)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1964)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1974)

Plants & gardens - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1975)

Plants and their ways in South Africa - Stoneman, Bertha M., 1866 -1943 (Longmans, Green, 1915)

Plants and X rays - Breslavet︠s︡, L. P. (Lidii︠a︡ Petrovna), 1882 -1969 (American Institute of Biological Sciences, 1960)

Plants in Danger: what do we know? (1986)

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 Michigan; simple keys for the identification of the native seed plants of the state - Gleason, Henry A. (Henry Allan), 1882 -1975 (G. Wahr, 1918)

Plants of New Zealand - Blackwell, E. W. (Ellen Wright), 1864 -1952 (Whitcombe and Tombs, Ltd, 1906)

Plants of New Zealand - Blackwell, E. W. (Ellen Wright), 1864 -1952 (Whitcombe and Tombs, 1907)

Plants of possible insecticidal value : a review of the literature up to 1941 - United States. Office of Experiment Stations. (U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1945)

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 Rhode Island : being an enumeration of plants growing without cultivation in the State of Rhode Island - Bennett, James Lawrence, 1832 -1904 (Providence Press, 1888)

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

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)

Plants of Yellowstone National Park - McDougall, W. B. (Walter Byron), 1883 - (U.S. Govt. Print. Off, 1936)

Plants poisonous to live stock - Long, Harold C. (Harold Cecil), 1876 - (Univ. Press, 1917)

Plants poisonous to live stock - Long, Harold C. (Harold Cecil), 1876 - (University Press, 1917)

Plants poisonous to live stock - Long, Harold C. (Harold Cecil), 1876 - (University press, 1917)

Plants tested for or reported to possess insecticidal properties - McIndoo, N. E. (Norman Eugene), 1881 -1956 (U.S. Dept. of Agriculture, 1924)

Plantsman - New Hampshire Plant Growers' Association. (2006)

The Pliocene floras of the Dutch-Prussian border - Reid, Clement, 1853 -1916 (M. Nijhoff, 1915)

Die Pljesivica und ihr Verbindungszug mit dem Velebit in botanischer Hinsicht. A Pljesvica s a Velebittel összekötö hegyvonulat botan. viszonyai - Rossi, Ljudevit, 1850 - (Pallas Irodalmi és Nyomdai Részvénytársaság, 1913)

A pocket synopsis of the families of British flowering plants : (based upon the system of Engler) - Grove, W. B. (William Bywater), 1848 -1938 (University Press, 1915)

Point Lobos Reseerve; State Park, California - California. Division of Beaches; Parks. ([State Print. Off, 1954)

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

Pollen and spores of Barro Colorado Island - Roubik, David W. (David Ward), 1951 - (Missouri Botanical Garden, 1991)

Pollen - Edgeworth, Michael Pakenham, 1812 -1881 (Hardwicke & Bogue, 1877)

Pollination biology of Silene spaldingii - Lesica, Peter. (Montana Natural Heritage Program, 1996)

Popular botany; the living plant from seed to fruit - Step, Edward, 1855 -1931 (H. Holt and company, 1913)

A popular California flora : or, Manual of botany for beginners with illustrated introductory lessons, especially adapted to the Pacific Coast ; to which is added an analytical key to west coast botany, containing brief descriptions of over 1600 species of Pacific Coast plants - Rattan, Volney, 1840 -1915 (Whitaker & Ray, 1896)

A popular California flora, or, Manual of botany for beginners. Containing descriptions of flowering plants growing in central California, and westward to the ocean. With illustrated introductory lessons, especially adapted to the Pacific coast - Rattan, Volney, 1840 -1915 (A.L. Bancroft, 1883)

A popular California flora, or, Manual of botany for beginners. With illustrated introductory lessons, especially adapted to the Pacific Coast. To which is added an Analytical key to west coast botany. Containing brief descriptions of over 1600 species of Pacific Coast plants - Rattan, Volney, 1840 -1915 (The Whitaker & Ray Co, 1896)

A popular California flora, or, Manual of botany for beginners : with illustrated introductory lessons, especially adapted to the Pacific Coast : to which is added an analytical key to West Coast botany, containing brief descriptions of over 1600 species of Pacific Coast plants - Rattan, Volney, 1840 -1915 (Bancroft, 1888)

A popular California flora, or, Manual of botany for beginners : with illustrated introductory lessons especially adapted to the Pacific coast : to which is added an analytical key to West Coast botany, containing brief descriptions of over 1600 species of Pacific coast plants - Rattan, Volney, 1840 -1915 (Bancroft, 1887)

A popular California flora : or, manual of botany for beginners ... : to which is added an analytical key to West Coast botany ... - Rattan, Volney, 1840 -1915 (Bancroft, 1888)

A popular California flora, or Manual of botany for beginners. Containing descriptions of exogenous plants growing in central California, and westward to the ocean - Rattan, Volney, 1840 -1915 (A. L. Bancroft and Company, 1879)

A popular California flora, or, Manual of botany for beginners. Containing descriptions of flowering plants growing in central California, and westward to the ocean. With illustrated introductory lessons - Rattan, Volney, 1840 -1915 (A.L. Bancroft, 1880)

A popular California flora, or, Manual of botany for beginners - Rattan, Volney, 1840 -1915 (A.L. Bancroft and company, 1880)

A popular California flora, or Manual of botany for beginners. Containing descriptions of flowering plants growing in central California, and westward to the ocean. With illustrated introductory lessons, especially adapted to the Pacific coast - Rattan, Volney, 1840 -1915 (A.L. Bancroft, 1882)

A popular California flora, or, Manual of botany for beginners. Containing descriptions of flowering plants growing in central California, and westward to the ocean - Rattan, Volney, 1840 -1915 (A.L. Bancroft and Company, 1885)

Popular field botany; containing a familiar and technical description of the plants most common to the various localities of the British Isles, adapted to the study of either the artificial or natural systems - Catlow, Agnes, 1807? -1889 (Reeve, Benham, and Reeve, 1848)

Popular garden botany; containing a familiar and scientific description of most of the hardy and half-hardy plants introduced into the flower garden - Catlow, Agnes, 1807? -1889 (L. Reeve, 1855)

Popular gardening and fruit growing; An illustrated periodical devoted to horticulture in all its branches (Popular gardening publishing company, 1889)

Popular Science Review (1869)

Popular west coast flora; an analytical key to the flora of the Pacific coast, in which are described over eighteen hundred species of flowering plants growing west of the Sierra Nevada and Cascade crests, from San Diego to Puget Sound - Rattan, Volney, 1840 -1915 (The Whitaker & Ray co. (incorporated), 1905)

Populäre Botanik oder gemeinfassliche Anleitung zum Studium der Pflanze und des Pflanzenreiches. Zugleich ein Handbuch zum Bestimmen der Pflanzen auf Excursionen - Schmidlin, Eduard, 1808? -1890 (Krais & Hoffmann, 1857)

Population ecology of mule deer with emphasis on potential impacts of gas and oil development along the east slope of the Rocky Mountains, northcentral Montana - United States. Bureau of Land Management. (The Dept.?, 1982)

Portulacaceae through Caryophyllaceae of New York State - Mitchell, Richard S., 1938 - (University of the State of New York, State Education Dept, 1993)

Postilla - Peabody Museum of Natural History. (Peabody Museum of Natural History, 1991)

Pot grown rock plants and alpines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Mayfair Nurseries, 1932)

Potted rock plants [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Mayfair Nurseries, 1930)

Practical botany - Cavers, F. (Francis), 1876 -1936 (W.B. Clive, University Tutorial Press Ld, 1911)

Practical botany for elementary students : introductory to the systematic study of flowering plants - Houston, David (W. Stewart & Co, 1882)

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)

Preliminary genetic analysis of Silene spaldingii (Spalding's catchfly), a candidate threatened species - Montana Natural Heritage Program. ([Montana Natural Heritage Program], 1995)

Preliminary inventory of Canadian weeds - Crompton, Clifford W. (Agriculture Canada, Research Branch, 1988)

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 vascular plants of the Lackawanna and Wyoming valleys - Dudley, William Russel, 1849 -1911 (The Republican Press, 1887)

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)