Columbia subject headings:
Ambel (Spain)--Antiquities.
Ambel (Spain)--Buildings, structures, etc.
Church buildings--Spain--Ambel--History.
Excavations (Archaeology)--Spain--Ambel.
Historic buildings--Conservation and restoration--Spain--Ambel.
Hospitalers--Spain--Ambel--History.
Templar architecture--Spain--Ambel.
Templars--Spain--Ambel--History.
Harvard subject headings:
Ambel (Spain)--Antiquities.
Ambel (Spain)--Buildings, structures, etc.
Church buildings--Spain--Ambel--History.
Excavations (Archaeology)--Spain--Ambel.
Historic buildings--Conservation and restoration--Spain--Ambel.
Hospitalers--Spain--Ambel--History.
Templar architecture--Spain--Ambel.
Templars--Spain--Ambel--History.
Princeton subject headings:
Castles--Spain--Zaragoza (Province)--History.
Church buildings--Spain--Zaragoza (Province)--History.
Hospitalers--Spain--Zaragoza (Province)--History.
Military religious orders--Spain--Zaragoza (Province)--History.
Templar architecture--Spain--Zaragoza (Province)--History.
Templars--Spain--Zaragoza (Province)--History.