Special scientific report. Wildlife - U.S. Fish; Wildlife Service (The Service, 1969)

Special scientific report. Wildlife - U.S. Fish; Wildlife Service (The Service, 1970)

Special scientific report. Wildlife - U.S. Fish; Wildlife Service (The Service, 1972)

Special scientific report. Wildlife - U.S. Fish; Wildlife Service (The Service, 1975)

Special scientific report. Wildlife - U.S. Fish; Wildlife Service (The Service, 1976)

Special scientific report. Wildlife - U.S. Fish; Wildlife Service (The Service, 1979)

Special scientific report. Wildlife - U.S. Fish; Wildlife Service (The Service, 1983)

Special status species : proposed resource management plan amendment/environmental impact statement - United States. Bureau of Land Management. Roswell District Office. ([U.S. Department of the Interior, Bureau of Land Management, Roswell District Office; Pecos District Office], 2007)

Species list : birds, mammals, fish, reptiles, and amphibians for the Forest Service, including separate lists for Idaho, Montana and North Dakota - United States. Forest Service. Northern Region. (U.S. Dept. of Agriculture, Forest Service, Northern Region, 1978)

Species of special concern in Pennsylvania - Genoways, Hugh H. (Carnegie Museum of Natural History, 1985)

Species taxa of North American birds; a contribution to comparative systematics - Mayr, Ernst, 1904 -2005 (The Club, 1970)

Spixiana - Zoologische Staatssammlung München. (Zoologische Staatssammlung Mchen, 2002)

Die stämme der wirbeltiere - Abel, Othenio, 1875 -1946 (W. de Gruyter, 1919)

The standard natural history - Kingsley, J. S. (John Sterling), 1854 -1929 (S.E. Cassino and company, 1885)

Station bulletin - New Hampshire Agricultural Experiment Station. (Agricultural Experiment Station, University of New Hampshire, 1948)

The story of the birds : being an introduction to the study of ornithology - Dixon, Charles, 1858 -1926 (George Allen, 1900)

A student's text-book of zoology - Shipley, A. E. Sir, (Arthur Everett), 1861 -1927 (S. Sonnenschein and co, 1898)

A student's text-book of zoology - Shipley, A. E. Sir, (Arthur Everett), 1861 -1927 (S. Sonnenschein and Co., ltd, 1905)

A student's text-book of zoology - Shipley, A. E. Sir, (Arthur Everett), 1861 -1927 (S. Sonnenschein and Co., ltd, 1932)

Studies of Cenozoic vertebrates of western North America and of fossil primates - Carnegie Institution of Washington (Carnegie Institution of Washington, 1942)

Studies on Cenozoic vertebrates of western North America ... - Colbert, Edwin H. 1905 -2001 (Carnegie Institution of Washington, 1938)

Studies on the structure & development of vertebrates - Goodrich, Edwin S. (Edwin Stephen), 1868 -1946 (Macmillan, 1930)

A study of the parasitic nematode genus Tetrameres - Mollhagen, T. R. (Tony Ray) (Texas Tech University Press, 1991)

A study of the structure of feathers, with reference to their taxonomic significance - Chandler, Asa C. (Asa Crawford), 1891 -1958 (University of California press, 1916)

Stuttgarter Beiträge zur Naturkunde. Serie B, Geologie und Paläontologie - Staatliches Museum für Naturkunde in Stuttgart. (Staatliches Museum für Naturkunde, 1991)

Stuttgarter Beiträge zur Naturkunde. Serie B, Geologie und Paläontologie - Staatliches Museum für Naturkunde in Stuttgart. (Staatliches Museum für Naturkunde, 1999)

Synopsis of the parasites of vertebrates of Canada : nematodes of birds - Kennedy, Murray James, 1943 - (Alberta Agriculture, Animal Health Division, 1990)

System of ophthalmology - Duke-Elder, Stewart, Sir, 1898 -1978 (Mosby, 1958)

Systema avium Australasianarum = A systematic list of the birds of the Australasian region - American Ornithologists' Union. (British Ornithologists' Union, 1927)

A systematic list of the birds of California - Grinnell, Joseph, 1877 -1939 (Cooper Ornithological Club, 1912)

Systematic notes on the bird family Cracidae. No. 10, The genera Mitu and Pauxi and the generic relationships of the Cracini - Vaurie, Charles (American Museum of Natural History, 1967)

Systematic notes on the bird family Cracidae. No. 3, Ortalis guttata, Ortalis superciliaris, and Ortalis motmot - Vaurie, Charles (American Museum of Natural History, 1965)

Systematic notes on the bird family Cracidae. No. 5, Penelope purpurascens, Penelope jacquacМ§u, and Penelope obscura - Vaurie, Charles (American Museum of Natural History, 1966)

Systematic notes on the bird family Cracidae. No. 6, Reviews of nine species of Penelope - Vaurie, Charles (American Museum of Natural History, 1966)

Systematics and evolution of the Gruiformes (Class Aves). 2, Additional comments on the Bathornithidae, with descriptions of new species - Cracraft, Joel (American Museum of Natural History, 1971)

Systematics and evolution of the Gruiformes (class, Aves). 1, The Eocene family Geranoididae and the early history of the Gruiformes - Cracraft, Joel (American Museum of Natural History, 1969)

Systematische Phylogenie ... - Haeckel, Ernst, 1834 -1919 (G. Reimer, 1895)