Columbia subject headings:
Bilecik (Turkey)--Economic conditions--20th century.
Bilecik (Turkey)--History--20th century.
Bilecik (Turkey)--Social conditions--20th century.
Bilecik İli (Turkey)--History--20th century.
Historic buildings--Turkey--Bilecik.
Prisons--Turkey--Bilecik--History.
Transportation--Turkey--Bilecik--History.
Turkey--Politics and government--20th century.
Harvard subject headings:
Bilecik İli (Turkey)--History.
Historic buildings--Bilecik--Turkey.
Prisons--Turkey--Bilecik--History.
Transportation--Turkey--Bilecik--History.
Princeton subject headings:
Bilecik İli (Turkey)--History.