Columbia subject headings:
Harvard subject headings:
Carl-Zeiss-Stiftung (Heidenheim an der Brenz, Germany)--History.
Carl-Zeiss-Stiftung Jena--History.
Optical industry--Germany--History.
Princeton subject headings:
Carl-Zeiss-Stiftung (Heidenheim an der Brenz, Germany)
Carl-Zeiss-Stiftung Jena--History.
Optical industry--Germany--History.