Reise in Ostafrika in den Jahren 1903-1905 : mit Mitteln der Hermann und Elise geb. Heckmann Wentzel-Stiftung : Wissenschaftliche Ergebnisse - Voeltzkow, Alfred, 1860 -1946 (E. Schweizerbartsche Verlagsbuchhandlung, 1906)

Reise in Ostafrika in den Jahren 1903-1905 : mit Mitteln der Hermann und Elise geb. Heckmann Wentzel-Stiftung : Wissenschaftliche Ergebnisse - Voeltzkow, Alfred, 1860 -1946 (E. Schweizerbartsche Verlagsbuchhandlung, 1913)

Reise in Ostafrika in den Jahren 1903-1905 : mit Mitteln der Hermann und Elise geb. Heckmann Wentzel-Stiftung : Wissenschaftliche Ergebnisse - Voeltzkow, Alfred, 1860 -1946 (E. Schweizerbartsche Verlagsbuchhandlung, 1915)

Reise nach Brasilien in den Jahren 1815 bis 1817 - Wied, Maximilian, Prinz von, 1782 -1867 (Gedruckt und verlegt bey H.L. Brönner, 1820)

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)

Reisen in den Vereinigten Staaten, Canada und Mexico - Müller, J. W. von Baron (Johann Wilhelm) 1824 -1866 (F.A. Brockhaus, 1865)

Reisen in Europa, Asien, und Afrika : mit besonderer Rücksicht auf die naturwissenschaftlichen Verhältnisse der betreffenden Länder ; unternommen in den Jahren 1835 bis 1841 - Russegger, Joseph. (E. Schweizerbart'sche Verlagshandlung, 1841)

Rendiconti - Reale Accademia dei Lincei (l'Accademia, 1891)

Rendiconti - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (1921)

Rendiconti delle Sessioni dell'Accademia delle Scienze dell'Istituto di Bologna - Accademia delle scienze dell'Istituto di Bologna. (1852)

Repertorio bibliografico delle pubblicazioni della R. Accademia del scienze di Torino - Accademia delle scienze di Torino (G.B. Paravia, 1883)

Repertorio fisico-natural de la isla de Cuba - Poey, Felipe, 1799 -1891 (Impr. del gobierno y capitanía general por S.M. [etc, 1866)

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

Report of a geological survey of Wisconsin, Iowa, and Minnesota : and incidentally of a portion of Nebraska Territory : made under instructions from the United States Treasury Department - United States. General Land Office. (Lippincott, Grambo & Co, 1852)

Report of a geological survey of Wisconsin, Iowa, and Minnesota;and incidentally of a portion of Nebraska Territory - United States. General Land Office (Lippincott, Grambo, 1852)

Report of a geological survey of Wisconsin, Iowa, and Minnesota; and incidentally of a portion of Nebraska Territory. Made under instructions from the United States Treasury department - United States. General Land Office. (Lippincott, Grambo & co, 1852)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1835)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1837)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1841)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1860)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1831)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1873)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1883)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1885)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1901)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1920)

Report of the Canterbury Philosophical and Literary Institution - Canterbury Philosophical; Literary Institution. (1827)

Report of the Commissioner for ... - Baird, Spencer Fullerton, 1823 -1887 (G.P.O, 1894)

Report of the Commissioner for ... - Baird, Spencer Fullerton, 1823 -1887 (G.P.O, 1892)

Report of the (Free) Public Library, Museum (Liverpool) - Liverpool (England). Free Public Library. Museum (1897)

Report of the Geological Survey of Ohio - Geological Survey of Ohio. (Nevins & Myers, state printers, 1882)

Report of the geological survey of Ohio - Geological Survey of Ohio. (Nevins & Meyers, 1882)

Report of the Leeds Philosophical & Literary Society - Leeds Philosophical; Literary Society.

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1856)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1911)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1913)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1914)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1915)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1917)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1919)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1922)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1923)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1924)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1925)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1926)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1927)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1928)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1929)

Report of the Secretary of the Smithsonian Institution and financial report of the Executive Committee of the Board of Regents for the year ending June 30 ... - Smithsonian Institution (Smithsonian Institution, 1936)

Report of the Secretary of the Smithsonian Institution and financial report of the Executive Committee of the Board of Regents for the year ending June 30 ... - Smithsonian Institution (Smithsonian Institution, 1937)

Report of the Secretary of the Smithsonian Institution and financial report of the Executive Committee of the Board of Regents for the year ending June 30 ... - Smithsonian Institution (Smithsonian Institution, 1938)

Report of the Secretary of the Smithsonian Institution and financial report of the Executive Committee of the Board of Regents for the year ending June 30 ... - Smithsonian Institution (Smithsonian Institution, 1933)

Report of the Secretary of the Smithsonian Institution and financial report of the Executive Committee of the Board of Regents for the year ending June 30 ... - Smithsonian Institution (Smithsonian Institution, 1945)

Report of the Secretary of the Smithsonian Institution and financial report of the Executive Committee of the Board of Regents for the year ending June 30 ... - Smithsonian Institution (Smithsonian Institution, 1946)

Report of the Secretary of the Smithsonian Institution and financial report of the Executive Committee of the Board of Regents for the year ending June 30 ... - Smithsonian Institution (Smithsonian Institution, 1954)

Report of the Secretary of the Smithsonian Institution and financial report of the Executive Committee of the Board of Regents for the year ending June 30 ... - Smithsonian Institution (Smithsonian Institution, 1955)

Report of the Secretary of the Smithsonian Institution and financial report of the Executive Committee of the Board of Regents for the year ending June 30 ... - Smithsonian Institution (Smithsonian Institution, 1956)

Report of the Secretary of the Smithsonian Institution and financial report of the Executive Committee of the Board of Regents for the year ending June 30 ... - Smithsonian Institution (Smithsonian Institution, 1960)

Report of the Secretary of the Smithsonian Institution and financial report of the Executive Committee of the Board of Regents for the year ending June 30 ... - Smithsonian Institution (Smithsonian Institution, 1961)

Report of the Secretary of the Smithsonian Institution and financial report of the Executive Committee of the Board of Regents for the year ending June 30 ... - Smithsonian Institution (Smithsonian Institution, 1962)

Report of the Secretary of the Smithsonian Institution and financial report of the Executive Committee of the Board of Regents for the year ending June 30 ... - Smithsonian Institution (Smithsonian Institution, 1964)

Report of the South African Association for the Advancement of Science - South African Association for the Advancement of Science. (The Association, 1905)

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

Report of the United States Geological Survey of the territories - Lesquereux, Léo, 1806 -1889 (Govt. Print. Off, 1875)

Report of the United States Geological Survey of the territories - Lesquereux, Léo, 1806 -1889 (Govt. Print. Off, 1884)

Report of the United States National Museum - United States National Museum (U.S. Govt. Print. Off, 1887)

Report of the Wellcome Research Laboratories at the Gordon Memorial College, Khartoum - Wellcome Research Laboratories (Khartoum, Sudan) (Dept. of Education, Sudan Govt, 1908)

Report on a zoological mission to India in 1913 - Flower, Stanley Smyth (Ministry of Public Works, Egypt, Zoological Service, 1914)

Report on the agriculture and geology of Mississippi. Embracing a sketch of the social and natural history of the state - Mississippi. State Geologist. (E. Barksdale, State Printer, 1854)

Report on the fishes, reptiles and birds of Massachusetts - Massachusetts. Zoological; Botanical Survey. (Dutton and Wentworth, State printers, 1839)

Report on the geology and resources of the Black hills of Dakota, with atlas - Geographical; Geological Survey of the Rocky Mountain Region (U.S.) (Govt. Print. Off, 1880)

Report on the geology, mineralogy, botany, and zoology of Massachusetts - Massachusetts. Geological Survey. (Press of J.S. and C. Adams, 1833)

Report on the geology, mineralogy, botany, and zoology of Massachusetts - Massachusetts. Geological Survey. (J.S. and C. Adams, 1835)

Report on the progress and condition of the United States National Museum - United States National Museum (U.S. Govt. Print. Off, 1924)

Report on the progress and condition of the United States National Museum - United States National Museum (U.S. Govt. Print. Off, 1925)

Report on the progress and condition of the United States National Museum - United States National Museum (U.S. Govt. Print. Off, 1943)