Columbia subject headings:
Crime--Illinois--Chicago.
Criminal statistics--Illinois--Chicago.
Juvenile delinquency--Illinois--Chicago.
Harvard subject headings:
Crime--Illinois--Chicago
Criminal statistics--Illinois--Chicago.
Criminals--Illinois--Chicago.
Juvenile delinquency--Illinois--Chicago
Princeton subject headings:
Crime and criminals--Illinois--Chicago.
Criminal statistics--Illinois--Chicago.
Juvenile delinquency--Illinois--Chicago.