Columbia subject headings:
Harvard subject headings:
Aviation medicine--Germany (East)--History.
Papenfuss, Winfried, 1933-
Physicians--Germany (East)--Biography.
Space medicine--Germany (East)--History.
Princeton subject headings:
Aviation medicine--Germany (East)--History.
Papenfuss, Winfried, 1933-
Physicians--Germany (East)--Biography.
Space medicine--Germany (East)--History.