Explorations in social change / Edited by George K. Zollschan [and] Walter Hirsch. With an introd. by Don Martindale. Zollschan, George K. [from old catalog] Hirsch, Walter, 1919- [from old catalog] Social change. 301.24 ZOE Boston : Houghton Mifflin, 1964. 1964. 1964 Text xxviii, 832 p. ; eng