Columbia subject headings:
Harvard subject headings:
Gender identity--Germany.
Sex differences in education--Germany.
Sex discrimination in education--Germany.
Sex instruction for children--Germany.
Sex instruction--Germany.
Sexual orientation--Germany.
Princeton subject headings:
Gender identity--Germany.
Sex differences in education--Germany.
Sex discrimination in education--Germany.
Sex instruction for children--Germany.
Sex instruction--Germany.
Sexual orientation--Germany.