Columbia subject headings:
Harvard subject headings:
Architecture--Italy--Otranto--Guidebooks.
Art, Italian--Italy--Otranto--Guidebooks.
Otranto (Italy)--Guidebooks.
Princeton subject headings:
Architecture--Italy--Otranto--Guidebooks.
Art, Italian--Italy--Otranto--Guidebooks.
Otranto (Italy)--Description and travel--Guidebooks.