Columbia subject headings:
Harvard subject headings:
Gays--Germany (East)--Congresses.
Homosexuality--Germany (East)--Congresses.
Lesbians--Germany (East)--Congresses.
Princeton subject headings:
Gay men--Germany (East)--Congresses.
Gays--Germany (East)--Congresses.
Lesbians--Germany (East)--Congresses.