Columbia subject headings:
Commercial law--Germany--History--Sources.
Commercial law--Germany--History.
Germany--Commerce--History--Sources.
Germany--Commerce--History.
Germany--History--843-1273--Sources.
Law merchant.
Usury--Germany--History--843-1273.
Usury--Germany--History--Sources.
Harvard subject headings:
Commerce--History--Medieval, 500-1500--Sources
Commercial law--Germany--History--Sources.
Germany--Commerce--History--Sources.
Germany--History--843-1273--Sources.
Law merchant.
Usury--Germany--History--Sources.
Princeton subject headings:
Commercial law--Germany--History.
Germany--Commerce--History.
Germany--History--843-1273--Sources.
Usury--Germany--History.