Present Work of Gerhard Heilmann
Shufeldt, Robert Wilson 1850-1934
Article
1916
The Auk
33
457--458
BioStor
English
Washington, D.C, American Ornithologists' Union, etc, 1884-
BioStor: https://biostor.org/reference/123822 DOI: https://doi.org/10.2307/4072673