Factors affecing the usefulness of honeybees in pollination
By: by Geo. H. Vansell
Series: Circular / United States. Dept. of Agriculture -- no. 650; Circular (United States. Dept. of Agriculture) -- no. 650.
Publisher: U.S. Dept. of Agriculture
Published: 1942
Place of publication: Washington, D.C
Language: eng
Number of pages: 32
Subjects: Honeybee; Pollination by insects
Notes: Caption title.

Contribution from the Bureau of Entomology and Plant Quarantine in cooperation with the University of California.

Bibliography: p. 31.