Cooley spruce gall aphid
By: [Arthur L. Antonelli and R. Lee Campbell].
Contributors: Campbell, R. Lee; Washington State University. Cooperative Extension.
Series: Insect answers; Extension bulletin -- 0966.; Extension bulletin (Washington State University. Cooperative Extension) -- 966.
Publisher: Cooperative Extension, College of Agriculture, Washington State University
Published: 1981
Place of publication: Pullman, [Wash.]
Language: eng
Subjects: Spruce -- Diseases and pests -- Washington (State); Cooley spruce gall adelgid -- Control
Notes: Caption title.

"Reprinted October 1981"--P. [1].

"Previously published as EM 4119"--P. 2.