Columbia subject headings:
Harvard subject headings:
Discrimination--Germany--History--Exhibitions.
Gays--Germany--History--Exhibitions.
Homosexuality--Germany--History--Exhibitions.
Lesbians--Germany--History--Exhibitions.
Same-sex marriage--Germany--History--Exhibitions.
Princeton subject headings:
Discrimination--Germany--History--Exhibitions.
Gays--Germany--History--Exhibitions.
Homosexuality--Germany--History--Exhibitions.
Lesbians--Germany--History--Exhibitions.
Same-sex marriage--Germany--History--Exhibitions.