Columbia subject headings:
Harvard subject headings:
Chemistry, Technical--Study and teaching--Germany (East)
Chemistry--Research--Germany (East)--History.
Chemists--Germany (East)--Biography.
Leibnitz, Eberhardt, 1910-
Princeton subject headings:
Chemistry, Technical--Study and teaching--Germany (East).
Chemists--Germany (East)--Biography.
Leibnitz, Eberhardt, 1910-