Columbia subject headings:
Architecture, Medieval--Spain--Asturias--Congresses.
Architecture--Spain--Asturias--Congresses.
Art, Spanish--Spain--Asturias--Congresses.
Church architecture--Spain--Asturias--Congresses.
Harvard subject headings:
Architecture, Early Christian--Spain--Asturias--Congresses.
Architecture, Mozarabic--Congresses.
Architecture, Mozarabic--Spain--Asturias--Congresses.
Architecture, Visigothic--Spain--Asturias--Congresses.
Excavations (Archaeology)--Guadiana River Region (Spain and Portugal)--Congresses.
Excavations (Archaeology)--Spain--Asturias--Congresses.
Umayyad dynasty--History--Congresses.
Visigoths--Spain--History--Congresses.
Princeton subject headings: