Columbia subject headings:
Belarusians--Poland.
Lithuanians--Poland.
Minorities--Poland.
Ukrainians--Poland.
Harvard subject headings:
Belarus--Relations--Poland.
Belarusians--Poland.
Lithuania--Relations--Poland.
Lithuanians--Poland.
Poland--Ethnic relations
Poland--Relations--Belarus.
Poland--Relations--Lithuania
Poland--Relations--Ukraine
Ukraine--Relations--Poland.
Ukrainians--Poland.
Princeton subject headings: