Observations on the Pterylosis of Certain Picidæ
Shufeldt, Robert Wilson 1850-1934
Article
1888
The Auk
5
212--218
BioStor
English
Washington, D.C, American Ornithologists' Union, etc, 1884-
BioStor: https://biostor.org/reference/122813 DOI: https://doi.org/10.2307/4067182