The forms of the black hawk-eagle
By: by Herbert Friedman.
Series: Smithsonian miscellaneous collections -- v. 111, no. 16; Publication -- 4013; Publication (Smithsonian Institution) -- 4013.
Publisher: Smithsonian Institution
Published: 1950
Place of publication: Washington
Language: eng
Subjects: Black hawk-eagle
Notes: "February 28, 1950."