Columbia subject headings:
Gangs--Latin America.
Juvenile delinquency--Latin America.
Violence--Latin America.
Harvard subject headings:
Gangs--El Salvador.
Gangs--Latin America.
Juvenile delinquency--Latin America.
School violence--El Salvador.
Violence
Violence--El Salvador--Prevention.
Violence--Latin America
Violence--Social aspects--El Salvador.
Youth and violence--El Salvador.
Princeton subject headings:
Gangs--El Salvador.
School violence--El Salvador.
Violence--El Salvador--Prevention.
Violence--Social aspects--El Salvador.
Violence.
Youth and violence--El Salvador.