Cloward, Richard A. Delinquency and opportunity; a theory of delinquent gangs, by Richard A. Cloward and Lloyd E. Ohlin. - Glencoe, Ill.: Free Press, 1960. - 220 p. 22 cm. Includes bibliography. LCCN: 60010892 Subjects--Topical Terms: Gangs.Juvenile delinquency. Dewey Class. No.: 364.2 CLO