Wardle, R.A. 1929 . The Problems of Applied Entomology. McGraw-Hill New York 587 pp.
Notes: Part I covers types of general problems, such as host resistance, parasites, predators, and insecticides; Part II considers problems on a regional basis.
Wardle, R.A. 1929 . The Problems of Applied Entomology. McGraw-Hill New York 587 pp.
Notes: Part I covers types of general problems, such as host resistance, parasites, predators, and insecticides; Part II considers problems on a regional basis.