Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1936)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1959)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1938)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1939)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1937)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1940)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1942)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1947)

Publication - Smithsonian Institution. Institute of Social Anthropology (U.S. Govt. Print. Off, 1947)

Publication - Smithsonian Institution. Institute of Social Anthropology (U.S. Govt. Print. Off, 1953)

Qualitative alkaloid tests - Schubert, Bernice, 1913 -2000 (1954)

Rapid biological inventories - Field Museum of Natural History. Environmental; Conservation Programs. (Field Museum, 2001)

Rapid biological inventories - Field Museum of Natural History. Environmental; Conservation Programs. (Field Museum, 2006)

Rapid inventories, biological and social - Field Museum of Natural History. (Field Museum, 2008)

Recueil des travaux botaniques néerlandais - Koninklijke Nederlandse Botanische Vereniging. (Société botanique néerlandaise, 1904)

Regiones terrestres prioritarias de México - Aguilar Zúñiga, Claudia (Comisión Nacional para el Conocimiento y Uso de la Biodiversidad (CONABIO), 2000)

Règles internationales de la nomenclature botanique adoptées par le Congrès international de botanique de Vienne, 1905 = International rules of botanical nomenclature adopted by the International Botanical Congresses of Vienna, 1905 and Brussels, 1910 = Internationale Regeln der botanischen Kongressen zu Wien 1905 und Bruüssel 1910 - Briquet, John, 1870 -1931 (G. Fischer, 1912)

Reisen in Britisch-Guiana in den Jahren 1840-1844 : nebst einer Fauna und Flora Guiana's nach Vorlagen von Johannes Müller, Ehrenberg, Erichson, Klotzsch, Troschel, Cabanis und Andern - Ehrenberg, Christian Gottfried, 1795 -1876 (J. J. Weber, 1847)

Rendiconti - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (1912)

Répertoire des noms génériques mentionnés dans l'Index kewensis et ses quinze premiers suppléments = Guide to the generic names appearing in the Index Kewensis and its fifteen supplements = Repertorio de los nombres genericos enumerados en el Index Kewensis y sus quince suplementos = Repertorium der im Index Kewensis und seinen fuenfzehn ersten Supplementen erwaehnten Gattungsnamen - Rouleau, Ernest 1916 -1991 (Châtelain, 1981)

Repertorium annuum literaturae botanicae periodicae - Bemmelen, J. A. van. (Erven Loosjes, 1873)

Repertorium botanicum, oder, Versuch einer systematischen Darstellung der neuesten Leistungen im ganzen Umfange der Pflanzenkunde - Dierbach, Johann Heinrich, 1788 -1845 (Meyersche Hof-Buchh, 1831)

Repertorium specierum novarum regni vegetabilis. Beihefte (Verlag des Repertoriums, 1919)

Report of the State Entomologist on the noxious and beneficial insects of the state of Illinois - Illinois State Entomologist. (State Entomologist, 1912)

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, 1920)

The Review of applied entomology. Series A, Agricultural - C.A.B. International. Bureau of Crop Protection (Commonwealth Agricultural Bureaux, etc, 1919)

Revisio generum plantarum vascularium omnium atque cellularium multarum secundum leges nomenclaturae internationales cum enumeratione plantarum exoticarum in itinere mundi collectarum, mit erläuterungen - Kuntze, Otto, 1843 -1907 (A. Felix [etc., etc.], 1891)

Revisio generum plantarum:vascularium omnium atque cellularium multarum secundum leges nomenclaturae internationales cum enumeratione plantarum exoticarum in itinere mundi collectarum ... - Kuntze, Otto, 1843 -1907 (A. Felix [etc.], 1891)

Revisio generum plantarum:vascularium omnium atque cellularium multarum secundum leges nomenclaturae internationales cum enumeratione plantarum exoticarum in itinere mundi collectarum ... - Kuntze, Otto, 1843 -1907 (A. Felix [etc.], 1893)

Revisio generum plantarum:vascularium omnium atque cellularium multarum secundum leges nomenclaturae internationales cum enumeratione plantarum exoticarum in itinere mundi collectarum ... - Kuntze, Otto, 1843 -1907 (A. Felix [etc.], 1898)

Revue horticole (Librairie agricole de la maison rustique, 1912)

Richardiana (Tropicalia, 2011)

La Riforma della nomenclatura botanica trattata dal Congresso botanico internazionale di Genova 1892 - Underwood, Lucien Marcus, 1853 -1907 (Tip. Sordo-muti, 1892)

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

Die rohstoffe des pflanzenreiches; versuch einer technischen rohstofflehre des pflanzenreiches - Wiesner, Julius, 1838 -1916 (W. Engelmann, 1903)

Die Rohstoffe des Pflanzenreiches; Versuch einer technischen Rohstofflehre des Pflanzenreiches, unter Mitwirkung von Max Bamberger [et. el.] - Wiesner, Julius, 1838 -1916 (W. Engelmann, 1900)

Die Rohstoffe des Pflanzenreiches versuch einer technischen Rohstofflehre des Pflanzenreiches - Wiesner, Julius, 1838 -1916 (W. Engelmann, 1873)

Die Rohstoffe des Pflanzenreichs : versuch einer Technischen Rohstofflehre des Pflanzenreiches - Wiesner, Julius, 1838 -1916 (W. Engelmann, 1914)

Royal Palm Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Reasoner Bros, 1906)

Royal Palm Nurseries : 1907 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Reasoner Bros, 1907)

Royal Palm Nurseries, 1928 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Royal Palm Nurseries, Reasoner Brothers, 1928)

Royal Palm Nurseries : native and exotic plants, trees, shrubs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Reasoner Brothers, 1905)

San Francisco County agricultural crop report - San Francisco (Calif.). Dept. of Consumer Assurance. (City and County of San Francisco, Dept. of Agriculture and Weights and Measures, 1995)

Schriften der Königlichen Physikalisch-Ökonomischen Gesellschaft zu Königsberg - Königliche Physikalisch-Ökonomische Gesellschaft zu Königsberg. (In Commission bei Gräfe und Unzer, 1863)

Schriften der Physikalisch-Ökonomischen Gesellschaft zu Königsberg - Physikalisch-Ökonomische Gesellschaft zu Königsberg (In Commission bei Gräfe und Unzer, 1887)

Schule der systematischen Botanik - Hallier, Ernst, 1831 -1904 (W.G. Korn, 1878)

Schweizerische Zeitschrift für Land- und Gartenbau (Verlag von Meyer und Zeller, 1843)