Columbia subject headings:
Chernihivsʹka oblastʹ (Ukraine)--Antiquities.
Chernihivsʹka oblastʹ (Ukraine)--Buildings, structures, etc.
Fortification--Ukraine--Chernihivsʹka oblastʹ.
Harvard subject headings:
Chernihivsʹka oblastʹ (Ukraine)--Buildings, structures, etc.
Chernihivsʹka oblastʹ (Ukraine)--History.
Fortification--Ukraine--Chernihivsʹka oblastʹ--History.
Princeton subject headings: