Columbia subject headings:
Harvard subject headings:
Children of gay parents--Germany.
Families--Germany.
Families.
Fertility--Effect of drugs on--Germany.
Gay couples--Family relationships--Germany.
Gay couples--Germany.
Gay parents
Gay parents--Germany.
Same-sex parents--Germany.
Same-sex parents.
Princeton subject headings:
Families--Germany.
Gay parents--Germany.
Same-sex parents--Germany.