Columbia subject headings:
Harvard subject headings:
Albert Cohen, Vaillant & Cie--History.
Hamburg-Harburg (Hamburg, Germany)--History.
Rubber industry and trade--Germany--Hamburg--History.
Princeton subject headings:
Albert Cohen, Vaillant & Cie.--History.
Hamburg-Harburg (Hamburg, Germany)--History.
Rubber industry and trade--Germany (West)--Hamburg--History.