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. LCCN: 49048297 Subjects--Topical Terms: Animal ecology. LC Class. No.: QL751 / .A616 Dewey Class. No.: 591.5