Columbia subject headings:
Polish language--Dialects--Belarus--Periodicals.
Polish language--Dialects--Latvia--Periodicals.
Polish language--Dialects--Lithuania--Periodicals.
Polish language--Dialects--Ukraine--Periodicals.
Harvard subject headings:
Polish language--Dialects--Belarus--Periodicals.
Polish language--Dialects--Latvia--Periodicals.
Polish language--Dialects--Lithuania--Periodicals.
Polish language--Dialects--Ukraine--Periodicals.
Princeton subject headings: