Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 2010)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 2012)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 2013)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 2014)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 2015)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 2016)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1893)

Bulletin of the Charleston Museum - Rea, Paul Marshall, 1878 - (the Museum], 1910)

Bulletin of the Department of Geology - University of California, Berkeley. Department of Geology. (The University Press, 1914)

Bulletin of the Museum of Comparative Zoology at Harvard College - Harvard University. Museum of Comparative Zoology. (The Museum, 1902)

Bulletin of the Museum of Comparative Zoology at Harvard College - Harvard University. Museum of Comparative Zoology. (The Museum, 1913)

Bulletin of the Museum of Comparative Zoology at Harvard College - Harvard University. Museum of Comparative Zoology. (The Museum, 1927)

Bulletin of the Museum of Comparative Zoology at Harvard College - Harvard University. Museum of Comparative Zoology. (The Museum, 1935)

Bulletin of the Museum of Comparative Zoology at Harvard College - Harvard University. Museum of Comparative Zoology. (The Museum, 1944)

Bulletin of the Museum of Comparative Zoology at Harvard College - Harvard University. Museum of Comparative Zoology. (The Museum, 1948)

Bulletin of the Museum of Comparative Zoology at Harvard College - Harvard University. Museum of Comparative Zoology. (The Museum, 1949)

Bulletin of the Museum of Comparative Zoology at Harvard College - Harvard University. Museum of Comparative Zoology. (The Museum, 1950)

Bulletin of the Museum of Comparative Zoology at Harvard College - Harvard University. Museum of Comparative Zoology. (The Museum, 1953)

Bulletin of the Nuttall Ornithological Club - Baird, Spencer Fullerton, 1823 -1887 (The Club, 1877)

Bulletin of the Nuttall Ornithological Club - Baird, Spencer Fullerton, 1823 -1887 (The Club, 1878)

Bulletin - Southern California Academy of Sciences. (The Academy, 1981)

Bulletin - Southern California Academy of Sciences. (The Academy, 1984)

Bulletin - Southern California Academy of Sciences. (The Academy, 2014)

Bulletin of the Torrey Botanical Club - Torrey Botanical Club. (Torrey Botanical Club, 1895)

Bulletin of the United States Fish Commission - United States Fish Commission. (The Commission, Govt. Print. Off, 1903)

Bulletin of the United States Geological and Geographical Survey of the Territories - Geological; Geographical Survey of the Territories (U.S.) (Government Printing Office, 1880)

Bulletin of the United States Geological Survey - Geological Survey (U.S.) (G.P.O, 1905)

Bulletin of the United States National Museum - United States National Museum (G.P.O, 1875)

Bulletin of the United States National Museum - United States National Museum (G.P.O, 1876)

Bulletin of the United States National Museum - United States National Museum (G.P.O, 1877)

Bulletin of the United States National Museum - United States National Museum (G.P.O, 1880)

Bulletin of the United States National Museum - United States National Museum (G.P.O, 1882)

Bulletin of the United States National Museum - United States National Museum (G.P.O, 1883)

Bulletin of the United States National Museum - United States National Museum (G.P.O, 1881)

Bulletin of the United States National Museum - United States National Museum (G.P.O, 1884)

Bulletin of the United States National Museum - United States National Museum (G.P.O, 1885)

Bulletin of the United States National Museum - United States National Museum (G.P.O, 1892)

Bulletin of the United States National Museum - United States National Museum (G.P.O, 1907)

The Bulletin of zoological nomenclature - International Commission on Zoological Nomenclature (International Trust for Zoological Nomenclature, 1956)

Bulletin / Oriental Bird Club - Oriental Bird Club. (the Club, 1997)

Bulletin / Ornithological Society of the Middle East - Ornithological Society of the Middle East. (Ornithological Society of the Middle East, 1993)

Bulletin / Ornithological Society of the Middle East - Ornithological Society of the Middle East. (Ornithological Society of the Middle East, 1995)

Bulletin - Peabody Museum of Natural History. (The Museum, 1967)

Bulletin - Peabody Museum of Natural History. (The Museum, 1972)

Bulletin Scientifique / Académie Impériale des Sciences de Saint Petersbourg - Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia) (Académie Impériale des Sciences de Saint Pétersbourg, 1837)

Bulletin - United States. Bureau of Entomology. (G.P.O, 1896)

By the deep sea; a popular introduction to the wild life of the British shores - Step, Edward, 1855 -1931 (Jarrold, 1896)

The calendar of nature, or, The seasons of England - Cradock, E. Grove, Mrs. (Dickinson, Bros, 1849)

California birds - California Field Ornithologists. (California Field Ornithologists, 1971)

The Cambridge natural history - Harmer, S. F. (Sidney Frederic), 1862 -1950 (Macmillan and co., limited, 1899)

The Cambridge natural history - Harmer, S. F. (Sidney Frederic), 1862 -1950 (Macmillan and co., limited, 1900)

The Canadian bird book : illustrating in natural colors more than seven hundred north American birds, also several hundred photographs of their nests and eggs - Reed, Chester A. (Chester Albert), 1876 -1912 (Musson Book Co, 1914)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1928)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1976)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1980)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1989)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1991)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2009)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2015)

The Canadian handbook and tourist's guide : giving a description of Canadian lake and river scenery and places of historical interest, with the best spots for fishing and shooting - Small, H. Beaumont (Henry Beaumont), 1832 -1919 (M. Longmoore, 1867)

The Canadian handbook and tourist's guide, giving a description of Canadian lake and river scenery and places of historical interest, with the best spots for fishing and shooting - Small, H. Beaumont (Henry Beaumont), 1832 -1919 (M. Longmoore & Co)

The Canadian handbook and tourist's guide ; giving a description of Canadian lake and river scenery and places of historical interest with the best spots for fishing and shooting - Small, H. Beaumont (Henry Beaumont), 1832 -1919 (M. Longmoore & co, 1867)

The Canadian handbook and tourist's guide, giving a description of Canadian lake and river scenery and places of historical interest, with the best spots for fishing and shooting - Small, H. Beaumont (Henry Beaumont), 1832 -1919 (M. Longmoore & Co, 1866)

The Canadian naturalist and geologist - Natural History Society of Montreal. (B. Dawson, 1861)

The Canadian sportsman and naturalist - Couper, William, 1886 ([s.n.], 1881)

Capital natural de México - Sarukhan, Jose (Comisión Nacional para el Conocimiento y Uso de la Biodiversidad (CONABIO), 2008)

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

Carl von Linné, Vollständiges Natursystem - Linné, Carl von, 1707 -1778 (bey Gabriel Nicolas Raspe, 1773)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1908)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1925)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1930)

Caroli a Linné ... Systema naturæ per regna tria naturæ, secundum classes, ordines, genera, species; cum characteribus, differentiis, synonymis, locis - Gmelin, Johann Friedrich, 1748 -1804 (apud J.B. Delamolliere, 1789)