Columbia subject headings:
Harvard subject headings:
Frankfurt am Main (Germany)--Biography
Jews--Germany--Frankfurt am Main--Biography.
Jews--Germany--History--1933-1945.
Senger, Valentin.
Princeton subject headings:
Frankfurt am Main (Germany)--Biography.
Jews--Germany--Frankfurt am Main--Biography.
Jews--Germany--History--1933-1945.
Senger, Valentin.