Columbia subject headings:
Art thefts--Spain--Aragon--Congresses.
Art, Spanish--Spain--Aragon--Congresses.
Christian art and symbolism--Spain--Aragon--Congresses.
Cultural property--Spain--Aragon--Congresses.
Harvard subject headings:
Art thefts--Spain--Aragon--Congresses.
Art, Spanish--Spain--Aragon--Congresses.
Christian art and symbolism--Spain--Aragon--Congresses.
Cultural property--Spain--Aragon--Congresses.
Princeton subject headings: