Columbia subject headings:
Architecture, Romanesque--Spain--La Rioja--Guidebooks.
Art, Romanesque--Spain--La Rioja--Guidebooks.
Art, Spanish--Spain--La Rioja--Guidebooks.
Catholic church buildings--Spain--La Rioja--Guidebooks.
La Rioja (Spain)--Guidebooks.
Harvard subject headings:
Architecture, Romanesque--Spain--La Rioja--Guidebooks.
Art, Romanesque--Spain--La Rioja--Guidebooks.
Art, Spanish--Spain--La Rioja--Guidebooks.
Catholic church buildings--Spain--La Rioja--Guidebooks.
La Rioja (Spain)--Guidebooks.
Princeton subject headings:
Architecture, Romanesque--Spain--La Rioja--Guidebooks.
Art, Romanesque--Spain--La Rioja--Guidebooks.
Art, Spanish--Spain--La Rioja--Guidebooks.
Catholic church buildings--Spain--La Rioja--Guidebooks.
Guidebooks.
La Rioja (Spain)--Guidebooks.