Columbia subject headings:
Harvard subject headings:
Biologists--Germany--Biography.
Geneticists--Germany--Biography.
Genetics--History--20th century.
Germany--Politics and government--20th century
Hertwig, Paula, 1889-1983.
Princeton subject headings:
Biologists--Germany--Biography.
Geneticists--Germany--Biography.
Genetics--History--20th century.
Germany--Politics and government--20th century.
Hertwig, Paula, 1889-1983.