Bees of northwestern America
Subtitle: Halictus (Hymenoptera : Halictidae)
By: Radclyffe B. Roberts.
Series: Technical bulletin / Agricultural Experiment Station, Oregon State University -- 126.; Technical bulletin (Oregon State University. Agricultural Experiment Station) -- 126.
Publisher: Agricultural Experiment Station, Oregon State University
Published: 1973
Place of publication: Corvallis
Language: eng
Number of pages: 23
Subjects: Halictus -- Northwest, Pacific.; Bees -- Northwest, Pacific.
Notes: Caption title.

Includes bibliographical references (p. 19-20).