Collett on the Skull and Auricular Openings in North European Owls
Shufeldt, Robert Wilson 1850-1934
Article
1901
The Auk
18
207--208
BioStor
English
Washington, D.C, American Ornithologists' Union, etc, 1884-
BioStor: https://biostor.org/reference/122505 DOI: https://doi.org/10.2307/4069531