Columbia subject headings:
Harvard subject headings:
Coastwise navigation--History.
Deutsche Dampfschiffahrts-Gesellschaft Hansa--History.
Inland navigation--History.
Inland water transportation--History.
Shipping companies (Marine transportation)--Germany--History.
Steamboat lines--Germany--History.
Princeton subject headings:
Coastwise navigation--History.
Inland navigation--History.
Inland water transportation--History.
Shipping companies (Marine transportation)--Germany--History.
Steamboat lines--Germany--History.