Records and descriptions of western bumblebees (Bremidae)
Series: Proceedings of the California Academy of Sciences. 4th series -- v. 16, no. 12; Proceedings of the California Academy of Sciences -- v. 16, no. 12
Published: 1927
Place of publication: San Francisco
Language: eng
Number of pages: 380
Subjects: Bumblebees
Notes: Caption title.