speed of toxic action of new insecticides on pea aphid (Macrosiphum pisi (Kalt.) compared with nicotine sulfate
By: by Shen Chin Chang.
Published: 1950
Language: eng
Number of pages: 89
Subjects: Insecticides.; Peas -- Diseases and pests.; Aphididae.
Notes: Typescript.

Thesis (M.S.)--Oregon State College, 1950.

Bibliography: leaves 87-89.