Graham, Samuel A. 1891-1967. Principles of forest entomology [by] Samuel Alexander Graham [and] Fred Barrows Knight. - 4th ed. - New York, McGraw-Hill [1965] - xii, 417 p. illus. 24 cm. Third ed. published under title: Forest entomology. Subjects--Topical Terms: Forest insects. LC Class. No.: SB761 / .G75 1965 Dewey Class. No.: 634.967