Title: Nat͡s︡ionalʹni spet͡s︡sluz͡h︡by v period Ukraïnsʹkoï revoli͡u︡t͡s︡iï, 1917-1921 rr
Subjects: History, Internal security, Intelligence service, Espionage, Secret service
Places: Ukraine
Time periods: Revolution, 1917-1921