Columbia subject headings:
Chełm (Poland : Voivodeship)--History--Sources.
Podlasie (Poland : Region)--History--Sources.
Ukraine, Western--History--Autonomy and independence movements.
Ukraïnsʹka povstansʹka armii︠a︡--History--Sources.
Harvard subject headings:
Chełm (Poland : Voivodeship)--History--Sources.
Podlasie (Poland : Region)--History--Sources.
Ukraine, Western--History--Autonomy and independence movements.
Ukraïnsʹka povstansʹka armii︠a︡--History--Sources.
Princeton subject headings:
Chełm (Poland : Voivodeship)--History--Sources.
Podlasie (Poland : Region)--History--Sources.
Ukraine, Western--History--Autonomy and independence movements.
Ukraïnsʹka povstansʹka armii︠a︡--History--Sources.