Columbia subject headings:
Domestic relations--Germany--Congresses.
Germany--Social policy--Congresses.
Social legislation--Germany--Congresses.
Social legislation.
Social policy.
Harvard subject headings:
Domestic relations--Germany--Congresses.
Germany--Social policy.
Social legislation
Social legislation--Germany--Congresses.
Social policy.
Princeton subject headings:
Domestic relations--Germany--Congresses.
Family policy--Germany--Congresses.
Germany--Social policy--Congresses.
Social legislation--Germany--Congresses.