Columbia subject headings:
Architecture, Romanesque--Spain--Cantabria.
Church architecture--Spain--Cantabria.
Harvard subject headings:
Architecture, Romanesque--Spain--Cantabria.
Christian art and symbolism--Spain--Cantabria--Medieval, 500-1500.
Church architecture--Spain--Cantabria.
Princeton subject headings:
Architecture, Romanesque--Spain--Santander (Province).
Church architecture--Spain--Santander (Province).