Cofer, Charles Norval. Programmed Learning Aid for Introduction to psychology / Charles N. Cofer; coordinating editor: Roger H. Hermanson - Homewood, Ill. : Learning systems Co., 1972 - xi, 135 p. : ill. ; 25 cm. - Irwn PLAID series . Includes index ISBN: 0256012822 Subjects--Topical Terms: Psychology -- Study and teaching Dewey Class. No.: 150 COF