Factors of importance in pea aphid control
By: by J.E. Dudley, Jr
Contributors: Dudley, Jr., J. E.; University of Wisconsin. Agricultural Experiment Station
Publisher: United States Department of Agriculture
Published: 1949
Place of publication: Madison, Wis
Language: eng
Subjects: Pea aphid; Control
Notes: Caption title.

"Wisconsin Cannery Fieldman's Conferences February 22-25, 1949."