DuPont, Robert L., 1936- Getting tough on gateway drugs : a guide for the family / by Robert L. DuPont, Jr. ; with a foreword by Ann Landers. - Washington, D.C. : American Psychiatric Press, c1984. - xxi, 332 p. ; 24 cm. Includes index. ISBN: 0880480351 : $16.95 LCCN: 84014595 LC Class. No.: HV5825 .D95 1984 / .D95 1984 Dewey Class. No.: 362.2/92/0973