Programmed learning aid for introductory sociology / Paul B. Horton and Robert L. Horton ; coordinating editor Roger H. Hermanson. Introductory sociology Self review in introductory sociology Horton, Paul B. (Paul Burleigh) Horton, Robert L. jt. at. Sociology Programmed instruction. 301 19 HOP Includes index. Cover title: Self review in introductory sociology. Homewood, Ill. : Learning Systems, c1971. c1971. 1971 Text xi, 137 p. ; eng Irwin programmed learning aid series