Bulletin of the United States National Museum - United States National Museum (G.P.O, 1916)

Bulletin of the United States National Museum - United States National Museum (G.P.O, 1919)

Bulletin of the United States National Museum - United States National Museum (G.P.O, 1941)

Bulletin of the United States National Museum - United States National Museum (G.P.O, 1946)

Bulletin of the United States National Museum - United States National Museum (G.P.O, 1950)

Bulletin of the U.S. Department of Agriculture - United States. Department of Agriculture. (Supt. of Docs., G.P.O, 1915)

Bulletin - Smithsonian Institution. (G.P.O, 1941)

Bulletin - Smithsonian Institution. (G.P.O, 1946)

Bulletin - Smithsonian Institution. (G.P.O, 1948)

Bulletin - Smithsonian Institution. (G.P.O, 1959)

Bulletin - Smithsonian Institution. (G.P.O, 1953)

Bulletin - Smithsonian Institution. (G.P.O, 1958)

Bulletin - Smithsonian Institution. (G.P.O, 1960)

Bulletin - Smithsonian Institution. (G.P.O, 1961)

Bulletin - Smithsonian Institution. (G.P.O, 1962)

Bulletin - Smithsonian Institution. (G.P.O, 1963)

Bulletin - Smithsonian Institution. (G.P.O, 1964)

Bulletin - Smithsonian Institution. (G.P.O, 1967)

Bulletin - United States. Bureau of Plant Industry. (G.P.O, 1902)

Bulletins de l'Académie royale des sciences, des lettres et des beaux-arts de Belgique - Académie royale des sciences, des lettres et des beaux-arts de Belgique. (1880)

Bulletins of American paleontology - Columbia University. College of Pharmacy. (Paleontological Research Institution [etc.], 1917)

Bulletins of American paleontology - Columbia University. College of Pharmacy. (Paleontological Research Institution [etc.], 1951)

Bulletins of American paleontology - Columbia University. College of Pharmacy. (Paleontological Research Institution [etc.], 1949)

Bulletins of American paleontology - Columbia University. College of Pharmacy. (Paleontological Research Institution [etc.], 1960)

Bulletins of American paleontology - Columbia University. College of Pharmacy. (Paleontological Research Institution [etc.], 1969)

Bulletins of American paleontology - Columbia University. College of Pharmacy. (Paleontological Research Institution [etc.], 1975)

Bulletins of American paleontology - Columbia University. College of Pharmacy. (Paleontological Research Institution [etc.], 1978)

Bulletins of American paleontology - Columbia University. College of Pharmacy. (Paleontological Research Institution [etc.], 1986)

Bulletins of American paleontology - Columbia University. College of Pharmacy. (Paleontological Research Institution [etc.], 1988)

Bulletins of American paleontology - Columbia University. College of Pharmacy. (Paleontological Research Institution [etc.], 1989)

Bulletins of American paleontology - Columbia University. College of Pharmacy. (Paleontological Research Institution [etc.], 1990)

Bulletins of American paleontology - Columbia University. College of Pharmacy. (Paleontological Research Institution [etc.], 1994)

Bulletins of American paleontology - Columbia University. College of Pharmacy. (Paleontological Research Institution [etc.], 1996)

Bulletins of American paleontology - Columbia University. College of Pharmacy. (Paleontological Research Institution [etc.], 1999)

Bulletins of American paleontology - Columbia University. College of Pharmacy. (Paleontological Research Institution [etc.], 2004)

Buzzacott's masterpiece - Buzzacott, Francis H. (McMains & Meyer, 1913)

Las Cactáceas de MÉXICO - Bravo-Hollis, Helia, 1901 -2001 (UNAM [Imprenta universitaria], 1937)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1957)

The Canadian naturalist and geologist - Natural History Society of Montreal. (B. Dawson, 1863)

Capital natural de México - Sarukhan, Jose (Comisión Nacional para el Conocimiento y Uso de la Biodiversidad (CONABIO), 2009)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1912)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1913)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1923)

Caroli a Linné ... Systema vegetabilium :secundum classes, ordines, genera, species. Cum characteribus, differentiis et synonymiis - Sprengel, Kurt Polycarp Joachim, 1766 -1833 (Sumtibus J.G. Cottae, 1817)

Caroli a Linné ... Systema vegetabilium :secundum classes, ordines, genera, species. Cum characteribus, differentiis et synonymiis - Sprengel, Kurt Polycarp Joachim, 1766 -1833 (Sumtibus J.G. Cottae, 1819)

Caroli a Linné ... Systema vegetabilium :secundum classes, ordines, genera, species. Cum characteribus, differentiis et synonymiis - Sprengel, Kurt Polycarp Joachim, 1766 -1833 (Sumtibus J.G. Cottae, 1830)

Cassell's book of birds - Brehm, Alfred Edmund, 1829 -1884 (Cassell, Petter and Galpin, 1875)

Cassell's book of birds : from the text of Dr. Brehm - Brehm, Alfred Edmund, 1829 -1884 (Cassell, Petter, and Galpin, 1869)

Catalog of Royal-Palm Nurseries : Reasoner Brothers, Oneco, Fla., U.S.A., telegraph Bradentown - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Royal-Palm Nurseries, 1914)

Catalogo das aves do Brasil: e lista dos exemplares existentes na colecao do Departamento de Zoologia. 2a Parte: Ordem PASSERIFORMES (continuacao): Superfamilia Tyrannoidea e Subordem PASSERES - Pinto, Oliverio Mario de Oliveira (Departamento de Zoologia, 1944)

Catálogo de los objetos remitidos por los Estados de la Federación, Distrito Federal, territorios de la República Mexicana y por particulares para la Exposición Mexicana en París (Oficina Tip. de la Secretaría de Fomento, 1889)