Reducing social tension and conflict : through the group conversation method / Rachel Davis DuBois and Mew-soong Li. ; Foreword by Ira Progoff. DuBois, Rachel Davis. Mew-soong Li. joint author. Group relations training. Attitude change. HM133 .D83 301 DUR "Annotated bibliography": p. 147-159. New York : Association, 1971 1971 1971 Text 159 p. : eng