Geographic variation in the savannah sparrows of the inland Southwest, Mexico and Guatemala
By: John P. Hubbard.
Contributors: Delaware Museum of Natural History.
Series: Nemouria -- no. 12.; Nemouria -- no. 12.
Publisher: Delaware Museum of Natural History
Published: 1974
Place of publication: Greenville
Language: eng
Number of pages: 21
Subjects: Savannah sparrow.; Bird populations.; Birds -- Southwest, New.; Birds -- Mexico.; Birds -- Guatemala.
Notes: Bibliography: p. 20-21.