Research bulletin : bulletin of the Agricultural Experiment Station of Nebraska - University of Nebraska (Lincoln campus). Agricultural Experiment Station. (Agricultural Experiment Station of Nebraska, 1916)

Research in plant transpiration, 1961 - Pallas, James E. (James Edward), 1928 - (Agricultural Research Service, U.S. Dept. of Agriculture, 1963)

Research in plant transpiration, 1962 - Pallas, James E. (Agricultural Research Service, U.S. Dept. of Agriculture, 1965)

Research in plant transpiration, 1963 - Pallas, James E. (Agricultural Research Service, U.S. Dept. of Agriculture, 1966)

Research in review - Massachusetts Agricultural Experiment Station. (University of Massachusetts, 1952)

Research summaries - U.S. Dairy Forage Research Center. (The Center, Agricultural Research Service, U.S. Dept. of Agriculture, 1991)

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

Research summaries - U.S. Dairy Forage Research Center. (The Center, Agricultural Research Service, U.S. Dept. of Agriculture, 1994)

Research summaries - U.S. Dairy Forage Research Center. (The Center, Agricultural Research Service, U.S. Dept. of Agriculture, 1992)

Researches upon the venom of the rattlesnake : with an investigation of the anatomy and physiology of the organs concerned - Mitchell, S. Weir (Silas Weir), 1829 -1914 (Smithsonian Institution, 1860)

Resource management report - Ontario. Fish; Wildlife Branch.

Resources of the southern fields and forests, medical, economical, and agricultural : being also a medical botany of the Confederate States; with practical information on the useful properties of the trees, plants and shrubs - Porcher, Francis Peyre, 1825 -1895 (Steam-power Press of Evans & Cogswell, 1863)

Resources of the southern fields and forests, medical, economical, and agricultural being also a medical botany of the Confederate States : with practical information on the useful properties of the trees, plants and shrubs - Porcher, Francis Peyre, 1825 -1895 (Steam-power Press of Evans & Cogswell, 1863)

Resources of the southern fields and forests, medical, economical, and agricultural - Porcher, Francis Peyre, 1825 -1895 (Walker, Evans & Cogswell, printers, 1869)

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

The Review of applied entomology. Series A, Agricultural - C.A.B. International. Bureau of Crop Protection (Commonwealth Agricultural Bureaux, etc, 1917)

The Review of applied entomology. Series A, Agricultural - C.A.B. International. Bureau of Crop Protection (Commonwealth Agricultural Bureaux, etc, 1918)

The Review of applied entomology. Series A, Agricultural - C.A.B. International. Bureau of Crop Protection (Commonwealth Agricultural Bureaux, etc, 1920)

The Review of applied entomology. Series A, Agricultural - C.A.B. International. Bureau of Crop Protection (Commonwealth Agricultural Bureaux, etc, 1922)

Review of applied mycology - Commonwealth Mycological Institute, Kew, Eng. (Commonwealth Mycological Institute, 1922)

Review of applied mycology - Commonwealth Mycological Institute, Kew, Eng. (Commonwealth Mycological Institute, 1923)

A review of the identifications of the species described in Blanco's Flora de Filipinas - Merrill, Elmer D. (Elmer Drew), 1876 -1956 (Bureau of public printing, 1905)

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

A revision of Bastin's College botany for the use of students of pharmacy - Bastin, Edson S. (Edson Sewell), 1843 -1897 (G. P. Engelhard & co, 1920)

Revision of the flora of the Bombay presidency. Parts III-XI, Gramineae - Blatter, Ethelbert, 1877 -1934 (s.n.], 1927)

Revista chilena de entomología - Sociedad Chilena de Entomología. (La Universidad, 1988)

Revista chilena de entomología - Sociedad Chilena de Entomología. (La Universidad, 1993)

Revista chilena de entomología - Sociedad Chilena de Entomología. (La Universidad, 2000)

Revista chilena de historia natural - Museo de Historia Natural de Valparaíso (Valparaíso, Chile) (Litografia e Impr. Industrial (F. Peters), 1921)

Revista de la Academia Canaria de Ciencias - Academia Canaria de Ciencias. (Academia Canaria de Ciencias, 1995)

Revista de la Academia Canaria de Ciencias - Academia Canaria de Ciencias. (Academia Canaria de Ciencias, 2013)

Revista de la Academia Canaria de Ciencias - Academia Canaria de Ciencias. (Academia Canaria de Ciencias, 2016)

Revista de la Academia Canaria de Ciencias - Academia Canaria de Ciencias. (Academia Canaria de Ciencias, 2020)

Revue bryologique et lichenologique - Muséum national d'histoire naturelle (France) (Museum national d'histoire naturelle, 1968)

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

Revue de mycologie - Laboratoire de cryptogamie, Paris (Laboratoire de cryptogamie, 1958)

Revue de mycologie - Laboratoire de cryptogamie, Paris (Laboratoire de cryptogamie, 1963)

Revue de mycologie - Laboratoire de cryptogamie, Paris (Laboratoire de cryptogamie, 1974)

Revue de mycologie - Laboratoire de cryptogamie, Paris (Laboratoire de cryptogamie, 1975)

Revue de mycologie - Laboratoire de cryptogamie, Paris (Laboratoire de cryptogamie, 1976)

Revue de mycologie - Laboratoire de cryptogamie, Paris (Laboratoire de cryptogamie, 1978)

Revue de mycologie - Laboratoire de cryptogamie, Paris (Laboratoire de cryptogamie, 1979)

Revue des sciences naturelles (1872)

Revue générale de botanique (Libraire générale de l'enseignement, 1890)

Revue générale de botanique (Libraire générale de l'enseignement, 1895)

Revue générale des sciences pures et appliquées ([s.n.], 1904)

Revue générale des sciences pures et appliquées ([s.n.], 1906)

Revue générale des sciences pures et appliquées ([s.n.], 1917)

Revue horticole (Librairie agricole de la maison rustique, 1841)

Revue mycologique (Bureaux de la rédaction, 1890)

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, 1920)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1951)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1983)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1985)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 2001)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 2004)

The rhizosphore and plant growth : information, program, and abstract : May 8-11, 1989 Beltsville Agricultural Research Center, Agricultural Research Service, U.S. Department of Agriculture, Beltsville, Maryland - Beltsville Agricultural Research Center. (s.n.], 1989)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1926)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1939)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1947)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1957)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1959)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1961)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1962)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1966)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1976)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1974)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1975)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1983)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1990)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1993)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1997)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 2001)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 2002)

Richardiana (Tropicalia, 2007)

Riviera nature notes / a popular account of the more striking plants and animals of the Riviera and the Maritime Alps - Comerford Casey, G. E. (George Edward), 1846 -1912 (Bernard Quaritch, 1903)

Rivista di patologia vegetale - Istituto di patologia vegetale (Università di Milano) (Tipografia del Seminario, 1915)

Rivista di scienze biologiche (Fratelli Bocca, 1900)

Rivista italiana di scienze naturali : periodico mensile premiato alle esposizioni nazionali di Palermo e di Milano ed a quella internazionale di Chicago (Ufficio, 1892)

Rivista italiana di scienze naturali : periodico mensile premiato alle esposizioni nazionali di Palermo e di Milano ed a quella internazionale di Chicago (Ufficio, 1898)

Rivista italiana di scienze naturali : periodico mensile premiato alle esposizioni nazionali di Palermo e di Milano ed a quella internazionale di Chicago (Ufficio, 1888)

Rivista italiana di scienze naturali : periodico mensile premiato alle esposizioni nazionali di Palermo e di Milano ed a quella internazionale di Chicago (Ufficio, 1894)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1935)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1937)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1976)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1979)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1980)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1982)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1984)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 2006)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 2010)

The role of environment during seed development on subsequent seed quality of cowpea (Vigna unguiculata) - Tang, An-Ching Cheng, 1952 - (1982)

Role of the root tip in development of enhanced rubidium uptake in washed, excised corn root tissue - Parrondo, Rolando Teodulo, 1937 - (1973)

Roosevelt wild life bulletin ... of the Roosevelt Life Forest Experiment Station of the New York College of Forestry at Syracuse University - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (The University, 1940)

Root development of field crops - Weaver, John E. (John Ernest),‏ ‎ 1884 -1966 (McGraw-Hill book company, inc, 1926)

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

Rootrots and leafspots of grains and grasses in the northern Great Plains and western 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, 1946)

The ruffed grouse; life history, propagation, management - Bump, Gardiner, 1902 - (1947)

Rules and regulations of Bureau of Entomology and Plant Quarantine ... Effective June 1, 1938 - United States. Bureau of Entomology; Plant Quarantine. (U.S. Govt. Print. Off, 1939)

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, 1850)

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.], 1864)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1874)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1883)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1884)