Thorpe, Geoffrey L. Behavior therapy : concepts, procedures, and applications / Geoffrey L. Thorpe, Sheryl L. Olson. - Boston, Mass. : Allyn and Bacon, c1990. - 320 p. : ill. Includes bibliographical references and index ISBN: 0205123414 Subjects--Topical Terms: Behavior therapy. LC Class. No.: RC489 .B4 / T467B