Columbia subject headings:
Harvard subject headings:
Hamm (North Rhine-Westphalia, Germany)--History--20th century.
Jews--Germany--Hamm (North Rhine-Westphalia)--Biography.
Jews--Germany--Hamm (North Rhine-Westphalia)--History--20th century.
Princeton subject headings:
Hamm (North Rhine-Westphalia, Germany)--History--20th century.
Jews--Germany--Hamm (North Rhine-Westphalia)--Biography.
Jews--Germany--Hamm (North Rhine-Westphalia)--History--20th century.