Columbia subject headings:
Collective labor agreements--Germany.
Freedom of association--Germany.
Labor unions--Law and legislation--Germany.
Liberty of contract--Germany.
Strikes and lockouts--Law and legislation--Germany.
Harvard subject headings:
Collective labor agreements--Germany.
Freedom of association--Germany.
Labor unions--Law and legislation--Germany.
Liberty of contract--Germany.
Strikes and lockouts--Law and legislation--Germany.
Princeton subject headings: