Prodromus florae batavae; nieuwe lijst der Nederlandsche phanerogamen en vaatkryptogamen - Nederlandsche Botanische Vereeniging (F.E. Macdonald, 1901)

Prodromus florae Hercyniae; oder, Verzeichniss der in dem Harzgebiete wildwachsenden Pflanzen, nach dem Sexualsystem geordnet - Hampe, Ernst, 1795 -1880 (Gebauer, 1836)

Prodromus florae Hispanicae :seu Synopsis methodica omnium plantarum in Hispania, sponte nascentium vel frequentius cultarum quae innotuerunt - Willkomm, Moritz, 1821 -1895 (E. Schweizerbart, 1880)

Prodromus florae hispanicae, seu synopsis methodica omnium plantarum in Hispania - Willkomm, Moritz, 1821 -1895 (E. Schweizerbart, 1880)

The production of field crops, a textbook of agronomy - Hutcheson, Thomas Barksdale, 1882 - (McGraw-Hill, 1948)

Productive farm crops - Montgomery, E. G. (Edward Gerrard), 1878 - (Lippincott, 1918)

Productive farm crops - Montgomery, E. G. (Edward Gerrard), 1878 - (J.B. Lippincott company, 1916)

Productive farm crops - Montgomery, E. G. (Edward Gerrard), 1878 - (J. B. Lippincott, 1922)

Productive plant husbandry; a text-book for high schools, including plant propagation, plant breeding, soils, field crops gardening, fruit growing, forestry, insects, plant diseases and farm management - Davis, Kary Cadmus, 1867 -1936 (J.B. Lippincott company, 1917)

Prof. dr. Thomé's Flora von Deutschland, Österreich und der Schweiz, in wort und bild, für schule und haus ... mit ... - Migula, W. (Walter), 1863 -1938 (1905)

Prof. dr. Thomé's Flora von Deutschland, Österreich und der Schweiz, in wort und bild, für schule und haus ... mit ... - Migula, W. (Walter), 1863 -1938 (1934)

Progressus rei botanicae = Fortschritte der Botanik = Progrès de la botanique = Progress of botany - Association internationale des botanistes. (G. Fischer, 1909)

The protection of beans, peas and lentils, 1979-April 1990 : citations from AGRICOLA concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (National Agricultural Library, 1990)

The protection of small grains, other than wheat, rice, or sorghums, 1979-April 1990 : citations from AGRICOLA concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1990)

The protection of soybeans, January 1980-November 1984 : citations from Agricola concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1985)

A provisional list of the parasitic fungi of Wisconsin - Davis, John Jefferson. (1914)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1930)

[Publications on plant pathology from Cornell Agricultural Experiment Station Memoirs, collected by H.S. Jackson.] - Jackson, H. S. (Herbert Spencer), 1883 -1951 (Cornell University], 1915)

[Publications on plant pathology from Wisconsin Experiment Station Research bulletins, collected by H.S. Jackson.] - Wisconsin. Agricultural Experiment Station, Madison (1911)

Quarterly summary of re-identifications, July, August, September 1962 : Summary No. 10 - United States. Bureau of Plant Industry, (New Crops Research Branch, Plant Industry Station, 1960)

Range and pasture management - Sampson, Arthur W. (Arthur William), 1884 -1967 (John Wiley, 1923)

Range management in the state of Washington - United States. Bureau of Plant Industry. (Gov't print. off, 1905)

Reading Naturalist. Reading - Reading Natural History Society.

Records of the Auckland Institute and Museum - Auckland Institute; Museum. (Auckland Institute and Museum, 1983)

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Reliquiae Formánekianae : enumeratio critica plantarum vascularium, quas itineribus in Haemo Peninsula et Asia Minore (Bithynia) factis collegit Dr. Ed. Formánek - Vandas, Karel, 1861 -1923 (Comitiorum Marchionatus Moraviae, 1909)

Repertorium specierum novarum regni vegetabilis (Selbstverlag des Herausgebers, 1919)

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Report - British Columbia Provincial Museum. (Printed by W.H. Cullin, 1956)

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Report / Botanical Exchange Club and Society of the British Isles - Botanical Exchange Club; Society of the British Isles. (1913)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1917)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1920)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1923)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1926)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1928)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1932)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1938)

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Report of the State Botanist - Peck, Charles H. (Charles Horton), 1833 -1917 (University of the State of New York, 1909)

Report of the Watson Botanical Exchange Club - Watson Botanical Exchange Club. (1916)

Report on the A. & M. College apiary. Together with practical suggestions in modern methods of bee keeping as applied to Texas conditions - Mally, Frederick W. (Frederick William), 1868 -1939 (Von Boeckmann, Schutze & co., State printers, 1902)

Reports and papers on botany - Grisebach, A. (August), 1814 -1879 (Printed for the Ray society, 1846)

Reports of the Director ... - Dominion Experimental Farms; Stations (Canada) (Experimental Farms, 1897)

Reports of the Director ... - Dominion Experimental Farms; Stations (Canada) (Experimental Farms, 1900)

Research summaries - U.S. Dairy Forage Research Center. (The Center, Agricultural Research Service, U.S. Dept. of Agriculture, 1995)

Resultate der Wissenschaftlichen Erforschung des Balatonsees - Hungary. Földmm̋uvelésügyi Minisztérium. (E. Hölzel, 1897)

The Review of applied entomology. Series A, Agricultural - C.A.B. International. Bureau of Crop Protection (Commonwealth Agricultural Bureaux, etc, 1916)

Revised checklist of New York State plants - Mitchell, Richard S., 1938 - (University of the State of New York, State Education Dept, 1997)

Revista chilena de historia natural - Museo de Historia Natural de Valparaíso (Valparaíso, Chile) (Litografia e Impr. Industrial (F. Peters), 1901)

Revista de zootécnia e veterinária - Brazil. Comissão de Linhas Telegráficas Estratégicas de Mato Grosso ao Amazonas. (1915)

Revue de botanique; bulletin mensuel de la Société Française de Botanique - Société française de botanique. (Au secrétariat de la Société, 1885)

Revue de botanique; bulletin mensuel de la Société Française de Botanique - Société française de botanique. (Au secrétariat de la Société, 1886)

Revue de botanique; bulletin mensuel de la Société Française de Botanique - Société française de botanique. (Au secrétariat de la Société, 1887)

Revue de botanique; bulletin mensuel de la Société Française de Botanique - Société française de botanique. (Au secrétariat de la Société, 1888)

Revue de botanique; bulletin mensuel de la Société Française de Botanique - Société française de botanique. (Au secrétariat de la Société, 1893)

Revue de botanique; bulletin mensuel de la Société Française de Botanique - Société française de botanique. (Au secrétariat de la Société, 1895)

Revue des sciences naturelles appliquées - Société nationale d'acclimatation de France (La Société, 1894)

Revue générale de botanique (Libraire générale de l'enseignement, 1922)

Revue horticole (Librairie agricole de la maison rustique, 1893)

Revue scientifique du Bourbonnais et du centre de la France - Olivier, Ernest, 1844 -1914 (Impr. É. Auclaire, 1891)

Revue scientifique du Bourbonnais et du centre de la France - Olivier, Ernest, 1844 -1914 (Impr. É. Auclaire, 1888)

La Revue scientifique du Limousin - Le Gendre, Charles. (Impr.-Librairie Ve. H. Ducourtieux, 1893)

La Revue scientifique du Limousin - Le Gendre, Charles. (Impr.-Librairie Ve. H. Ducourtieux, 1897)

La Revue scientifique du Limousin - Le Gendre, Charles. (Impr.-Librairie Ve. H. Ducourtieux, 1901)

La Revue scientifique du Limousin - Le Gendre, Charles. (Impr.-Librairie Ve. H. Ducourtieux, 1906)

Rheinische Flora. Beschreibung der wildwachsenden und cultivirten Pflanzen des Rheingebietes vom Bodensee bis zur Mosel und Lahn, mit besonderer Beru¨cksichtigung des Grossherzogthums Baden - Döll, Johann Christof, 1808 -1885 (H.L. Brnner, 1843)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1911)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1929)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1933)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1935)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1936)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1952)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1981)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 2004)

Ribsam's, 1868-1939 : farm-garden lawn seeds and supplies - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Martin C. Ribsam & Sons Co, 1939)

Ribsam's farm-garden, lawn seeds and supplies - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Martin C. Ribsam & Sons Co, 1938)

Ribsam's seed manual : 1868-1931, 63rd year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Martin C. Ribsam & Sons Co, 1931)

Ribsam's seed manual : 1868-1932, 64th year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Martin C. Ribsam & Sons Co, 1932)

Ribsam's seeds, 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Martin C. Ribsam & Sons Co, 1935)

Richardson's garden book, 1945 : everything for the garden - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E. Miller Richardson & Co, 1945)

Richardson's garden book, 1946 : everything for the garden - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E. Miller Richardson & Co, 1946)

Richardson's garden book, 1948 : everything for the garden, 3 stores - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E. Miller Richardson & Co, 1948)

Richardson's Griffith & Turner's 1942 garden book : everything for the garden - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E. Miller Richardson & Co, 1942)

Richardson's Griffith & Turner's 1943 garden book : everything for the garden - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E. Miller Richardson & Co, 1943)

Richardson's Griffith & Turner's, Wiseman-Downs' 1944 garden book : everything for the garden - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E. Miller Richardson & Co, 1944)

Richardson's seeds, 1949 : supplies for the garden and farm - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E. Miller Richardson & Co, 1949)

Richardson's seeds : farm and garden supplies, 1950 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E. Miller Richardson & Co, 1950)

Right seeds at right prices, 1902 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (A. Tilton & Son, 1902)

Rock River area assessment - Illinois. Dept. of Natural Resources. (Illinois Dept. of Natural Resources, 1996)

Root-knot and its control - Bessey, Ernst Athearn, 1877 -1957 (Govt. print. off, 1911)

Roskilde-egnens flora. I, Karkryptogamer og blomsterplanter - Thomsen, Christen, 1822 -1874 (H.A. Müllers bogtr, 1874)

Ross Bros. Co. 1914 [catalog of] vegetable, grass and flower seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ross Bros. Co, 1914)

Ross Bros. Co seeds, implements, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ross Brothers Company, 1929)

Ross' seed grows, 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ross Bro's. Co, 1930)

Ross seeds, farm equipment, dairy and poultry supplies, 1939 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ross Bros. Co, 1939)

Ross seeds, farm equipment, dairy and poultry supplies, 1940 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ross Bros. Co, 1940)

Ross seeds, farm machinery, poultry supplies, insecticides, fertilizers and tools : 1941 annual catalog - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ross Bros. Co, 1941)

Ross seeds, farm machinery, poultry supplies, insecticides, fertilizers and tools, 1942 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ross Bros. Co, 1942)

Ross seeds, farm machinery, poultry supplies, insecticides, fertilizers, tools, 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ross Bros. Co, 1934)

Ross seeds, farm machinery, poultry supplies, insecticides, fertilizers and tools : 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ross Bros. Co, 1938)

Ross seeds, farm machinery, poultry supplies, insecticides, fertilizers, tools : 1937 edition - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ross Bros. Co, 1937)

Ross seeds, fertilizers, farm machinery, insecticides, tools, poultry supplies for 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Ross Bros. Co, 1936)

Rostlinnictví : cili Návod k snadnému urcení a pojmenování rostlin v Cechách, Morave a jiných zemích Rakouského mocnárství domácích - Sloboda, Daniel. (V kommissí u Fr. Rivnáce, 1852)

The rural cyclopedia, or, A general dictionary of agriculture and of the arts, sciences, instruments, and practice, necessary to the farmer, stockfarmer, gardener, forester, landsteward, farrier, &c - Wilson, John M. (John Marius) (A. Fullarton, 1849)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1896)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1897)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1898)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1900)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1901)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1902)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1904)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1906)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1907)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1908)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1911)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1912)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1913)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1919)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1928)

Sage notes : Idaho Native Plant Society newsletter - Idaho Native Plant Society. (Idaho Native Plant Society, Pahove Chapter, 1999)

Saier's garden book for 1922 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Harry E. Saier Co. Inc, 1922)

Samenzucht, Samenhandlung, Handelsgärtnerei : Jahrgang 77, Nr. 176, Gründungsjahr 1855 / Carl Pabst - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Pabst, 1932)

Samenzucht und Samenhandlung, Handelsgärtnerei : Jubiläums-Katalog, 1930, 1855-1930, 75 Jahre / Carl Pabst - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Pabst, 1930)

Savage & Reid's annual catalogue of seeds etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Savage & Reid, 1902)

Schindler's garden manual for the southern states - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jos. A. Schindler & Co, 1903)

Schindler's garden manual for the southern states - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jos. A. Schindler & Co, 1904)

Schindler's garden manual for the southern states 1907 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jos. A. Schindler & Co, 1907)

Schindler's garden manual for the southern states 1908 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jos. A. Schindler & Co, 1908)

Schisler-Corneli Seed Co., 1912 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Schisler-Corneli Seed Co, 1912)

Schisler-Corneli Seed Co. 1913 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Schisler-Corneli Seed Co, 1913)

Schlegel & Fottler Co.'s specialties for 1909 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Schlegel & Fottler Co, 1909)

Schlegel & Fottler Co.'s specialties for 1910 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Schlegel & Fottler Co, 1910)

Schriften der Königlichen Physikalisch-Ökonomischen Gesellschaft zu Königsberg - Königliche Physikalisch-Ökonomische Gesellschaft zu Königsberg. (In Commission bei Gräfe und Unzer, 1866)

Schriften der Königlichen Physikalisch-Ökonomischen Gesellschaft zu Königsberg - Königliche Physikalisch-Ökonomische Gesellschaft zu Königsberg. (In Commission bei Gräfe und Unzer, 1869)

Schriften der Königlichen Physikalisch-Ökonomischen Gesellschaft zu Königsberg - Königliche Physikalisch-Ökonomische Gesellschaft zu Königsberg. (In Commission bei Gräfe und Unzer, 1872)

Schriften der Naturforschenden Gesellschaft in Danzig - Naturforschende Gesellschaft in Danzig. (Auf Kosten der Naturforschenden Gesellschaft, 1880)

Schriften der Naturforschenden Gesellschaft in Danzig - Naturforschende Gesellschaft in Danzig. (Auf Kosten der Naturforschenden Gesellschaft, 1895)