Columbia subject headings:
Harvard subject headings:
Charters--Germany--Berlin--Biography.
College students--Germany--Berlin--Biography.
Coper, Helmut, 1925-
Freie Universität Berlin--Students--Biography.
Princeton subject headings:
Charters--Germany--Berlin--Biography.
College students--Germany--Berlin--Biography.
Coper, Helmut, 1925-
Freie Universität Berlin--Students--Biography.