Principles of forest entomology / Knight, Fred Barrows, Heikkenen, Herman John, Graham, Samuel A. Forest insects. Forest insects 634 HIL 1980 A046 Or. Fourth ed. (1965) by S. A. Graham and F. B. Knight. New York : McGraw-Hill Book Co., c1980. c1980. Text xiii, 461 p. : McGraw-Hill series in forest resources