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, 1973)

Special scientific report Wildlife - U.S. Fish; Wildlife Service (The Service, 1974)

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

Special scientific report Wildlife - U.S. Fish; Wildlife Service (The Service, 1978)

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

Special scientific report Wildlife - U.S. Fish; Wildlife Service (The Service, 1980)

Special scientific report Wildlife - U.S. Fish; Wildlife Service (The Service, 1981)

Special scientific report Wildlife - U.S. Fish; Wildlife Service (The Service, 1982)

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

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

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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)

A study of two species of gulls, Larus Californicus and L. Delawarensis, breeding in an inland habitat - Vermeer, Kees (1967)

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