Programmed learning aid for aggression : causes and controls / Ross D Parke; Douglas B Sawin and Charles Norval Cofer. Sawin, Douglas B Sawin, Douglas B Aggressiveness in children Programmed instruction. 302.5 PAP Includes bibliographical references and index. Homewood, Ill. : Learning Systems Co., 1975. 1975. 1975 Text vi, eng