Report of the State Entomologist on injurious and other insects of the state of New York - Felt, Ephraim Porter, 1868 -1943 (Weed, Parsons and Co.; University of the State of New York, 1917)

Report of the United States Geological Survey of the territories - Lesquereux, Léo, 1806 -1889 (Govt. Print. Off, 1873)

Report on the progress and condition of the U.S. National Museum for the year ending June 30 ... - United States National Museum (G.P.O, 1921)

Report on the vegetation of the Island Ooryongto or Dagelet Island, Corea, February, 1818 [i.e. 1918] - Nakai, Takenoshin, 1882 - (Govt. of Chosen, 1919)

A report upon the boreal flora of the Sierra Nevada of California - Smiley, Frank Jason, 1880 - (University of California Press, 1921)

Report upon United States Geographical surveys west of the one hundredth meridian - Geographical Surveys West of the 100th Meridian (U.S.) (G.P.O, 1878)

Reports of the Survey. Botanical series - Geological; Natural History Survey of Minnesota. (1892)

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, 1920)

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

Revision of Europiella Reuter in North America, with the description of a new genus (Heteroptera, Miridae, Phylinae) - Schuh, Randall T. (American Museum of Natural History, 2004)

Revision of Phoenicocoris Reuter with descriptions of three new species from North America and a new genus from Japan (Heteroptera, Miridae, Phylinae) - Schwartz, Michael D. (American Museum of Natural History, 2004)

Revision of the Aphelininæ of North America : a subfamily of hymenopterous parasites of the family Chalcididæ - United States. Office of Experiment Stations. (G.P.O, 1895)

A revision of the moth genus Hesperumia (Lepidoptera, Geometridae) - Rindge, Frederick H. 1921 -1996 (American Museum of Natural History, 1974)

A revision of the moth genus Xanthotype (Lepidoptera, Geometridae) - Rindge, Frederick H. 1921 -1996 (American Museum of Natural History, 1978)

A revision of the North American moths of the genus Lomographa (Lepidoptera, Geometridae) - Rindge, Frederick H. 1921 -1996 (American Museum of Natural History, 1979)

Revista chilena de entomología - Sociedad Chilena de Entomología. (La Universidad, 1991)

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

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1992)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1998)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 2010)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 2015)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1910)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1914)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1916)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1923)

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

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1927)

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

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1930)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1932)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1934)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1938)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1941)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1943)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1945)

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

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1948)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1953)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1950)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1954)

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

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

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

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1977)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1979)

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

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1984)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1985)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1987)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1989)

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

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1991)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1994)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1995)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1996)

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.], 2000)

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

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 2003)

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

ri ben zhi wu ming hui - Honda, Masaji 本田正次 1897 -1984 (san sheng tang)

Rio Blanco Oil Shale Project. Tract C-a / [c]by Rio Blanco Oil Shale Project no.8 Progress report - CDM/Limnetics. (Rio Blanco Oil Shale Project, 1974)

Riparian and wetland community inventory of 14 reference areas in southwestern Idaho - United States. Bureau of Land Management. (Bureau of Land Management, Idaho State Office, 1998)

Riparian and wetland plant associations of southwestern Idaho : with a focus on the Bureau of Land Management's Lower Snake River District - United States. Bureau of Land Management. (U.S. Dept. of the Interior, Bureau of Land Management, National Science and Technology Center, Information and Communications Group, 2001)

Rivista di patologia vegetale - Istituto di patologia vegetale (Università di Milano) (Tipografia del Seminario, 1897)

Rivista italiana di scienze naturali : periodico mensile premiato alle esposizioni nazionali di Palermo e di Milano ed a quella internazionale di Chicago (Ufficio, 1899)

Rocky Mountain flowers : an illustrated guide for plant-lovers and plant-users - Clements, Frederic E. (Frederic Edward), 1874 -1945 (H. W. Wilson, 1920)

Rocky mountain flowers; an illustrated guide for plantlovers and plant-users - Clements, Frederic E. (Frederic Edward), 1874 -1945 (the H.W. Wilson company, 1914)

Rod and gun - Canadian Forestry Association. (Rod and Gun Pub. Co. [etc.], 1903)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1966)

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, 1980)

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

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)

The Royal Botanic Garden Edinburgh 1670-1970 - Fletcher, Harold R. (Her Majesty's Stationery Office, 1970)

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

Sämereien zum Tausch aus dem Königlichen botanischen Garten der Universität Breslau - Königlicher Botanischer Garten (Breslau) (1882)