Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1978)

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, 1984)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1989)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 2004)

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

Die rohstoffe des pflanzenreiches; versuch einer technischen rohstofflehre des pflanzenreiches - Wiesner, Julius, 1838 -1916 (W. Engelmann, 1900)

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, 1903)

Die Rohstoffe des Pflanzenreiches; Versuch einer technischen Rohstofflehre des Pflanzenreiches - Wiesner, Julius, 1838 -1916 (W. Engelmann, 1914)

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)

Die Rohstoffe des Pflanzenreichs : versuch einer Technischen Rohstofflehre des Pflanzenreiches - Wiesner, Julius, 1838 -1916 (W. Engelmann, 1918)

Die Rohstoffe des Pflanzenreichs : versuch einer Technischen Rohstofflehre des Pflanzenreiches - Wiesner, Julius, 1838 -1916 (W. Engelmann, 1921)

Rough draft of a manual of Indian sylviculture - Fernandez, E. E. (Jubliee Press, 1891)

Rough draft of a manual of Indian sylviculture - Fernandez, E. E (Jubilee Press, 1891)

Royal Palm Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Royal Palm Nurseries, Reasoner Bros, 1904)

Royal Palm Nurseries - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Royal Palm Nurseries, Reasoner Bros, 1903)

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

Royal Poinciana Nurseries (Incorporated) [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Royal Poinciana Nurseries (Incorporated), 1916)

Royal Poinciana Nurseries (Incorporated) [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Royal Poinciana Nurseries (Incorporated), 1917)

Royal Poinciana Nurseries (Incorporated) [catalog]. 1918 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Royal Poinciana Nurseries (Incorporated), 1918)

Ruins and old trees associated with remarkable events in English history - Roberts, Mary, 1788 -1864 (Harvey and Darton, 1840)

Ruwenzori expedition, 1934-5 ... - British Museum (Natural History) (Printed by order of the Trustees of the British Museum, 1939)

Ruwenzori expedition, 1934-5 ... - British Museum (Natural History) (Printed by order of the Trustees of the British Museum, 1940)

Ruwenzori expedition, 1934-5 ... - British Museum (Natural History) (Printed by order of the Trustees of the British Museum, 1951)

Ruwenzori expedition, 1934-5 ... - British Museum (Natural History) (Printed by order of the Trustees of the British Museum, 1957)

Sammlung naturhistorischer und physikalischer Aufsäze - Schrank, Franz von Paula, 1747 -1835 (Raspe, 1796)

Sargentia :a continuation of the contributions from the Arnold Arboretum of Harvard University - Arnold Arboretum. (The Arnold Arboretum of Harvard University, 1942)

Schlich's Manual of forestry - Schlich, William, Sir, 1840 -1925 (Bradbury, Agnew & Co, 1906)

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Die schmetterlinge der Philippinischen inseln. Beitrag zur indo-malayischen lepidopteren-fauna - Semper, Georg, 1837 -1909 (C. W. Kreidel, 1898)

Die schmetterlinge der Philippinischen inseln. Beitrag zur indo-malayischen lepidopteren-fauna - Semper, Georg, 1837 -1909 (C. W. Kreidel, 1900)

Science - American Association for the Advancement of Science. ([s.n.], 1891)

Science progress - Burdett, Henry C., Sir, 1847 -1920 (Scientific Press, 1895)

Science progress (John Murray, 1921)

Scientific and applied pharmacognosy, intended for the use of students in pharmacy, as a hand book for pharmacists, and as a reference book for food and drug analysts and pharmacologists - Kraemer, Henry, 1868 -1924 (Wiley, 1920)

Scientific Japan, past and present - Gakujutsu Kenkyu Kaigi (Japan) (1926)

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Scientific Reports / Great Barrier Reef Expedition 1928-29 - British Museum (Natural History) (BM(NH), 1931)

Scientific results of the Second Yarkand Mission : based upon the collections and notes of the late Ferdinand Stoliczka - Stoliczka, Ferdinand, 1838 -1874 (Printed by the Superintendent of Government Printing, India, 1879)

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Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 1994)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 2005)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 2009)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 2014)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 2015)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 2017)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 2018)

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Seeds and plants imported - United States. Department of Agriculture. (G.P.O, 1898)

Seeds and plants imported - United States. Department of Agriculture. (G.P.O, 1907)

Seeds and plants imported - United States. Department of Agriculture. (G.P.O, 1909)

Seeds and plants imported - United States. Department of Agriculture. (G.P.O, 1911)