Reports (King's Printer, 1917)

Reports of the Princeton University Expeditions to Patagonia, 1896-1899. J. B. Hatcher in charge - Princeton University Expeditions to Patagonia 1896 -1899 (The University, 1905)

Resultate der Wissenschaftlichen Erforschung des Balatonsees - Hungary. Földmm̋uvelésügyi Minisztérium. (E. Hölzel, 1897)

Return / British Museum - British Museum (Natural History) (British Museum, 1901)

Return / British Museum - British Museum (Natural History) (British Museum, 1911)

Review of Bacillus thuringiensis var. kurstaki (Btk) for use in forest pest management programs of Ontario - with special emphasis on the aquatic environment - Ontario. Aquatic Criteria Development Committee. (Dept. of Environmental Biology, University of Guelph, 1989)

A revision of the Malagabdellinae (Arhynchobdellida, Domanibdellidae), with a description of a new species, Malagabdella niarchosorum, from Ranomafana National Park, Madagascar - Borda, Elizabeth (American Museum of Natural History, 2006)

Revista chilena de historia natural - Museo de Historia Natural de Valparaíso (Valparaíso, Chile) (Litografia e Impr. Industrial (F. Peters), 1901)

Revista de la Academia Canaria de Ciencias - Academia Canaria de Ciencias. (Academia Canaria de Ciencias, 2006)

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)

Revista do Museu Paulista - Museu Paulista (O Museu, 1922)

Revista do Museu Paulista - Museu Paulista (Museu Paulista, 1900)

Revista do Museu Paulista - Museu Paulista (O Museu, 1937)

Revue des sciences naturelles (1879)

Revue internationale des sciences (O. Doin, 1879)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1903)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1910)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1918)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1921)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1923)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1954)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1956)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1962)

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.], 1984)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1988)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 2000)

Riassunto generale dei risultati zoologici - Fea, L. (Leonardo), 1852 -1903 (Tipografia R. Istituto Sordo-Muti, 1897)

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)

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)

Roosevelt wild life annals - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (Roosevelt Wild Life Forest Experiment Station, 1928)

Roosevelt wild life annals - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (Roosevelt Wild Life Forest Experiment Station, 1934)

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, 1923)

The royal natural history - Lydekker, Richard, 1849 -1915 (Frederick Warne & Co, 1896)

The royal natural history - Lydekker, Richard, 1849 -1915 (Frederick Warne & Co, 1893)

The royal natural history - Lydekker, Richard, 1849 -1915 (F. Warne, 1896)

The royal natural history - Lydekker, Richard, 1849 -1915 (F. Warne, 1893)

SCAMIT newsletter - Southern California Association of Marine Invertebrate Taxonomists. (SCAMIT, 2007)

Das Schmarotzertum im Tierreich und seine Bedeutung für die Artbildung - Graff, Ludwig von, 1851 -1924 (Quelle & Meyer, 1907)

Schriften der Naturforschenden Gesellschaft in Danzig - Naturforschende Gesellschaft in Danzig. (Auf Kosten der Naturforschenden Gesellschaft, 1895)

Schriften der Physikalisch-Ökonomischen Gesellschaft zu Königsberg - Physikalisch-Ökonomische Gesellschaft zu Königsberg (In Commission bei Gräfe und Unzer, 1909)

Science - American Association for the Advancement of Science. ([s.n.], 1883)

Science - American Association for the Advancement of Science. ([s.n.], 1885)

Science - American Association for the Advancement of Science. ([s.n.], 1897)

Science - American Association for the Advancement of Science. ([s.n.], 1900)

Science-gossip (Simpkin Marshall, Hamilton, Kent & Co, 1894)

The science of biology - Beaver, William C. (William Carl), 1896 - (C.V. Mosby Co, 1952)

The science of biology - Weisz, Paul B., 1921 - (McGraw-Hill, 1963)

Science of the sea. An elementary handbook of practical oceanography for travellers, sailors, and yachtsmen - Fowler, G. Herbert (George Herbert), 1861 -1940 (John Murray, 1912)

Science of the sea, an elementary handbook of practical oceanography for travellers, sailors, and yachtsmen - Fowler, G. Herbert (George Herbert), 1861 -1940 (Murray, 1912)

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

Science progress - Burdett, Henry C., Sir, 1847 -1920 (Scientific Press, 1896)

Science progress (John Murray, 1919)

Science progress (John Murray, 1920)

Scientific reports,. Series C, Zoology and botany - Mawson, Douglas, Sir, 1882 -1958 (s.n.], 1938)

Scientific Reports / Great Barrier Reef Expedition 1928-29 - British Museum (Natural History) (BM(NH), 1932)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1997)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 2014)

The Scottish naturalist (T. Buncle & Co. [etc.], 1952)

The Scottish naturalist (T. Buncle & Co. [etc.], 1955)

Sea and inland fisheries: report - Ireland. Dept. of Fisheries. (Stationery Off, 1912)

Sea anemones through X-rays : visualization of two species of Diadumene (Cnidaria, Actiniaria) using micro-CT - Rodríguez, Estefanía (American Museum of Natural History, 2018)

The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks - Arnold, Augusta Foote, 1844 -1903 (The Century Co, 1901)

The seasonal biological surveys of 1971 - University of Michigan. Great Lakes Research Division. (Great Lakes Research Division, University of Michigan, 1974)

Seasonal composition of invertebrates in several Oregon streams - Pacific Northwest Research Station (Portland, Or.) (U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1987)

sheng wu ming cheng he sheng wu xue shu yu de ci yuan - Jaeger, Edmund C. (Edmund Carroll) 1887 -1983 (ke xue chu ban she, 1979)

sheng wu xue yu sheng wu ji shu qing bao jian suo - Qiu, Junping, Zhang Shuyong & Chen Xianqin (zhong guo ke xue ji shu chu ban she, 1994)

Smithsonian contributions to the marine sciences - Smithsonian Institution (Smithsonian Institution Press, 1980)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1910)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1911)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1928)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1932)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1933)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1938)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1939)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1955)

Smithsonian year - Smithsonian Institution (Smithsonian Institution, 1966)

Smithsonian year - Smithsonian Institution (Smithsonian Institution, 1968)

Smithsonian year - Smithsonian Institution (Smithsonian Institution, 1969)