Columbia subject headings:
Intelligence service--Ukraine--History.
Orhanizat︠s︡ii︠a︡ ukraïnsʹkykh nat︠s︡ionalistiv.
Ukraine--History--World War, 1939-1945--Secret service.
Ukraïnsʹka povstansʹka armii︠a︡--History.
Harvard subject headings:
Intelligence service--Ukraine--History.
Orhanizat͡sii͡a ukraïnsʹkykh nat͡sionalistiv.
Ukraïnsʹka povstansʹka armii︠a︡--History.
World War, 1939-1945--Secret service--Ukraine.
Princeton subject headings: