Orchard mason bee
By: [Ron Bekey and E. C. Klostermeyer].
Contributors: Klostermeyer, E. C. 1919-; Washington State University. Cooperative Extension.; United States. Dept. of Agriculture.
Series: Insect answers; Extension bulletin -- 0922.; Extension bulletin (Washington State University. Cooperative Extension) -- 922.
Publisher: Cooperative Extension, College of Agriculture, Washington State University
Published: 1981
Place of publication: Pullman, Wash
Language: eng
Subjects: Orchard mason bee -- Washington (State); Pollination by insects -- Washington (State)
Notes: Caption title.

"July 1981"--P. [1].