Columbia subject headings:
Harvard subject headings:
Naturalists--Germany--Biography.
Schmidt, Helmut, 1918-2015.
Schmidt, Loki.
Statesmen's spouses--Germany--Biography.
Teachers--Germany--Biography
Princeton subject headings:
Naturalists--Germany--Biography.
Schmidt, Helmut, 1918-2015.
Schmidt, Loki.
Statesmen's spouses--Germany--Biography.
Teachers--Germany--Biography.