Columbia subject headings:
Harvard subject headings:
Cantabria (Spain)--Church history--Congresses.
Cantabria (Spain)--History--Congresses.
Customary law--Spain--Cantabria--Congresses.
Law--Spain--Cantabria--History--Congresses.
Law--Spain--Santander--Congresses.
Santander (Spain)--Charters--Congresses.
Spain--History--711-1516--Congresses.
Princeton subject headings:
Customary law--Spain--Santander (Province)--Congresses.
Law--Spain--Santander (Province)--History--Congresses.
Santander (Spain : Province)--Church history--Congresses.
Santander (Spain : Province)--History--Congresses.
Santander (Spain : Province)--Politics and government--Congresses.
Spain--History--711-1516--Congresses.