Columbia subject headings:
Black market--United States.
Firearms industry and trade--United States.
Firearms ownership--United States.
Gun control--United States.
Juvenile delinquency--United States.
United States. Bureau of Alcohol, Tobacco, and Firearms.
Violent crimes--United States.
Harvard subject headings:
Black market--United States--Firearms.
Gun control--United States
Juvenile delinquents--United States
United States. Bureau of Alcohol, Tobacco, and Firearms.
Violent crimes--United States
Princeton subject headings:
Black market--United States.
Firearms industry and trade--United States.
Firearms ownership--United States.
Gun control--United States.
Juvenile delinquency--United States.
United States. Bureau of Alcohol, Tobacco, and Firearms
Violent crimes--United States.