Columbia subject headings:
Harvard subject headings:
Bridges--Design and construction
Epirus (Greece and Albania)--Description and travel.
Epirus (Greece and Albania)--History.
Stone bridges--Epirus (Greece and Albania)--History.
Stone bridges--Epirus (Greece and Albania)--Pictorial works.
Princeton subject headings:
Bridges--Design and construction.
Epirus (Greece and Albania)--Description and travel.
Epirus (Greece and Albania)--History.
Stone bridges--Epirus (Greece and Albania)--History.
Stone bridges--Epirus (Greece and Albania).