Columbia subject headings:
Harvard subject headings:
Excavations (Archaeology)--Portugal
Excavations (Archaeology)--Portugal--Handbooks, manuals, etc.
Portugal--Antiquities--Handbooks, manuals, etc.
Portugal--Antiquities.
Princeton subject headings:
Art, Ancient--Portugal--Guidebooks.
Excavations (Archaeology)--Portugal--Guidebooks.
Guidebooks.
Portugal--Antiquities--Guidebooks.