Columbia subject headings:
Chernihivsʹka oblastʹ (Ukraine)--History, Military.
Cossacks--Ukraine--Chernihivsʹka oblastʹ--History.
Harvard subject headings:
Chernihivsʹka oblastʹ (Ukraine)--History, Military.
Cossacks--Ukraine--Chernihivsʹka oblastʹ--History.
Princeton subject headings: