Columbia subject headings:
Harvard subject headings:
Industrial engineers--Germany--Biography.
Kienzle, O. (Otto), 1893-1969.
Production engineering--Germany--History.
Systems engineering--Germany--History.
Princeton subject headings:
Industrial engineers--Germany--Biography.
Kienzle, O. (Otto), 1893-1969.
Production engineering--Germany--History.
Systems engineering--Germany--History.