Powers, Edwin. <br/><br/>
An experiment in the prevention of delinquency: the Cambridge-Somerville Youth Study 
by Edwin Powers and Helen Witmer. With a foreword by Gordon W. Allport. 
 - New York  Columbia University Press  1951. 
 - xxxiv, 649 p.  illus. 
<br/><br/> Reprint of the 1951 ed. 
<br/><br/>Bibliography: p. [638] 
<br/><br/><label>Subjects--Corporate Names: </label><br/>Cambridge-Somerville Youth Study.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Juvenile delinquency--Cambridge, Mass.<br/>Juvenile delinquency--Somerville, Mass.