Cooley spruce gall aphid.

Subjects

Series Statement

• Insect answers
• Extension mimeo -- 4119.
• Extension mimeo (Washington State University. Cooperative Extension Service) -- 4119.

Other Editions

• Cooley spruce gall aphid.Cooperative Extension Service, College of Agriculture, Washington State University1977-01-01
• Cooley spruce gall aphidCooperative Extension, College of Agriculture, Washington State University1981-01-01
• Cooley spruce gall aphid.Cooperative Extension, Washington State University, College of Agriculture and Home Economics1991-01-01