Klopfer, Peter H. An introduction to animal behavior : ethology's first century / Peter H. Klopfer. - 2nd ed. - Englewood Cliffs, N. J. : Prentice-Hall, 1974. - xiv, 332 p. : ill. ; 24 cm. Includes bibliographical references (p. 287-319) and index. ISBN: 0134779355 LCCN: 73-022467 Subjects--Topical Terms: Animal behavior.Animal behavior--History.