Columbia subject headings:
Aljafería (Zaragoza, Spain)
Castles--Spain--Zaragoza--History--Sources.
Harvard subject headings:
Aljafería (Zaragoza, Spain)
Architecture, Mudéjar--Spain--Zaragoza.
Architecture--Conservation and restoration--Spain--Zaragoza.
Islamic architecture--Spain--Zaragoza.
Palaces--Spain--Zaragoza--History--Sources.
Zaragoza (Spain)--Buildings, structures, etc.
Princeton subject headings:
Aljafería (Zaragoza, Spain)
Architecture, Mudéjar--Spain--Zaragoza.
Architecture--Conservation and restoration--Spain--Zaragoza.
Islamic architecture--Spain--Zaragoza.
Palaces--Spain--Zaragoza--History--Sources.
Zaragoza (Spain)--Buildings, structures, etc.