Columbia subject headings:
Harvard subject headings:
Internet and youth--Germany.
Internet and youth--Switzerland.
Internet--Government policy--Germany.
Internet--Government policy--Switzerland.
Internet--Security measures--Germany.
Internet--Security measures--Switzerland.
Youth--Legal status, laws, etc.--Germany.
Youth--Legal status, laws, etc.--Switzerland.
Princeton subject headings:
Internet and youth--Germany.
Internet and youth--Switzerland.
Internet--Government policy--Germany.
Internet--Government policy--Switzerland.
Internet--Security measures--Germany.
Internet--Security measures--Switzerland.
Youth--Legal status, laws, etc.--Germany.
Youth--Legal status, laws, etc.--Switzerland.