Author: Sandhouse, Grace A.
Title: The Type Species of the Genera and Subgenera of Bees
Description: Washington, Smithsonian Institution, United States Natonal Museum, 1943. Pp. 519-619 (as issued), original stiff wrappers, mostly unopened, ex libris (Proceedings of the United States National Museum, 92:3156). .

Keywords: Bees Entomology