Columbia subject headings:
Poland--Boundaries--Ukraine.
Poland--Ethnic relations.
Polish people--Ukraine--Ethnic identity.
Ukraine--Boundaries--Poland.
Ukraine--Ethnic relations.
Ukrainians--Poland--Ethnic identity.
Harvard subject headings:
Poland--Boundaries--Ukraine.
Poland--Ethnic relations
Polish people--Ukraine--Ethnic identity.
Ukraine--Boundaries--Poland.
Ukraine--Ethnic relations.
Ukrainians--Poland--Ethnic identity.
Princeton subject headings:
Poland--Boundaries--Ukraine.
Poland--Ethnic relations.
Polish people--Ukraine--Ethnic identity.
Ukraine--Boundaries--Poland.
Ukraine--Ethnic relations.
Ukrainians--Poland--Ethnic identity.