Columbia subject headings:
Former Polish Eastern Territories--History--Sources.
Kamunistychnai︠a︡ partyi︠a︡ Zakhodni︠a︡ĭ Belarusi--History--Sources.
Harvard subject headings:
Former Polish Eastern Territories--History--Sources.
Kamunistychnai︠a︡ partyi︠a︡ Belarusi--History--Sources.
Princeton subject headings: