The California Forms of the Genus Psaltriparus
Swarth, Harry S. (Harry Schelwald), 1878-1935
Article
1914
The Auk
31
499--526
BioStor
English
Washington, D.C, American Ornithologists' Union, etc, 1884-
BioStor: https://biostor.org/reference/124975 DOI: https://doi.org/10.2307/4072012