Pear psylla
By: [prepared by Arthur H. Retan, Everett Burtts, vanelle Peterson].
Contributors: Burtts, Everett.; Peterson, Vanelle.
Series: (EB / Cooperative Extension, College of Agriculture, Washington State University -- 0906); Extension bulletin (Washington State University. Cooperative Extension) -- 906.
Publisher: Cooperative Extension, College of Agriculture, Washington State University
Published: 1982
Place of publication: Pullman, Wash
Language: eng
Subjects: Pear psylla; Psylla -- Washington (State)
Notes: "January 1981."

At head of title: Insect answers.

Title from caption.