Allee, W. C. 1885-1955. Principles of animal ecology, / by W. C. Allee [and others] - Philadelphia, Saunders Co., 1949. - xii, 837 p. illus., maps. 26 cm. "Bibliography and author index": p. 731-801. Subjects--Topical Terms: Animal ecology. Dewey Class. No.: 591.7 / ALP 1967