An experiment in the prevention of delinquency: the Cambridge-Somerville Youth Study Prevention of delinquency Powers, Edwin. creator Witmer, Helen Leland joint author. text bibliography nyu New York Columbia University Press 1951 monographic eng
print
xxxiv, 649 p. illus. by Edwin Powers and Helen Witmer. With a foreword by Gordon W. Allport. Reprint of the 1951 ed. Bibliography: p. [638] Cambridge-Somerville Youth Study. Juvenile delinquency Cambridge, Mass Juvenile delinquency Somerville, Mass 711029 20160527203144.0 82497