Description of a Hybrid between the Barn and Cliff Swallows
Mearns, Edgar Alexander, 1856-1916
Article
1902
The Auk
19
73--74
BioStor
English
Washington, D.C, American Ornithologists' Union, etc, 1884-
BioStor: https://biostor.org/reference/123259 DOI: https://doi.org/10.2307/4069211