Columbia subject headings:
Historic districts--Conservation and restoration--Ecuador--Quito.
Quito (Ecuador)--History.
Harvard subject headings:
Historic districts--Conservation and restoration--Ecuador--Quito.
Historic districts--Ecuador--Quito--Conservation and restoration.
Quito (Ecuador)--History.
Princeton subject headings:
Historic districts--Ecuador--Quito--Conservation and restoration.
Quito (Ecuador)--History.