Spraying for the control of the walnut aphis
By: by A.R. Tylor
Series: Circular / University of California, College of Agriculture, Agricultural Experiment Station -- no. 131; Circular (California Agricultural Experiment Station) -- 131.
Publisher: University of California, College of Agriculture, Agricultural Experiment Station
Published: 1915
Place of publication: Berkeley, Calif
Language: eng
Number of pages: 11
Subjects: Control; Walnut; Diseases and pests