Columbia subject headings:
Cossacks--Ukraine--History.
Ukraine--History--1340-1648.
Zaporozhian Sich (Ukraine)--History.
Zaporozhians--History.
Harvard subject headings:
Cossacks--Ukraine--History.
Ukraine--History--1340-1648.
Zaporozhian Sich (Ukraine)--History.
Zaporozhians--History.
Princeton subject headings:
Cossacks--Ukraine--History.
Ukraine--History--1340-1648.
Zaporozhians--History.