Speciation and geographic variation in black-tailed gnatcatchers /

Bibliographic Details
Main Author:	Atwood, Jonathan L.
Format:	Book
Language:	English
Published:	Washington, D.C. : The American Ornithologists' Union, 1988.
Series:	Ornithological monographs ; no. 42.
Subjects:	Gnatcatchers. Passeriformes > Geographical distribution.