Columbia subject headings:
Harvard subject headings:
Fisheries--Constance, Lake of--History.
Fisheries--Constance, Lake--History.
Fishing--Constance, Lake of--History.
Fishing--Constance, Lake--History.
Internationale Bevollmächtigten-Konferenz für die Bodenseefischerei (100th)--History.
Princeton subject headings:
Fisheries--Constance, Lake of--History.
Fishing--Constance, Lake of--History.
Internationale Bevollmächtigten-Konferenz für die Bodenseefischerei (100th)--History.