Columbia subject headings:
Excavations (Archaeology)--Portugal--Congresses.
Excavations (Archaeology)--Spain--Congresses.
Portugal--Antiquities--Congresses.
Pottery, Medieval--Portugal--Congresses.
Pottery, Medieval--Spain--Congresses.
Spain--Antiquities--Congresses.
Harvard subject headings:
Excavations (Archaeology)--Portugal--Congresses.
Excavations (Archaeology)--Spain--Congresses
Pottery, Medieval--Portugal--Congresses.
Pottery, Medieval--Spain--Congresses.
Princeton subject headings: