Distribution of pear psylla, Psylla pyricola Foerster, and honeydew in Bartlett pear trees
By: by Martin George Kers.
Published: 1983
Language: eng
Number of pages: 43
Subjects: Pear -- Diseases and pests.
Notes: Typescript.

Thesis (M.S.)--Washington State University, 1983.

Bibliography: leaves 40-43.

WSU:"Department of Entomology."