Columbia subject headings:
Harvard subject headings:
Filmfabrik Wolfen, VEB--History.
ORWO (Firm)--History.
Photographic chemicals industry--Germany--Wolfen (Saxony-Anhalt)--History.
Photographic industry--Germany--Wolfen (Saxony-Anhalt)--History.
Princeton subject headings:
Aktiengesellschaft für Anilinfabrikation--History.
Filmfabrik Wolfen, VEB--History.
ORWO (Firm)--History.
Photographic chemicals industry--Germany--History.
Photographic industry--Germany--History.