Columbia subject headings:
Boryslav (Ukraine)--History--20th century.
Drohobych (Ukraine)--History--20th century.
Former Polish Eastern Territories--History--20th century.
Truskavet︠s︡ʹ (Ukraine)--History--20th century.
Harvard subject headings:
Boryslav (Ukraine)--History.
Cities and towns--Ukraine--Galicia, Eastern--History.
Drohobych (Ukraine)--History.
Galicia, Eastern (Ukraine)--History, Local.
Truskavet︠s︡ʹ (Ukraine)--History.
Princeton subject headings: