Columbia subject headings:
Baltic States--History--Periodicals.
Belarus--History--Periodicals.
Poland--History--Periodicals.
Harvard subject headings:
Baltic States--History--Periodicals.
Belarus--History--Periodicals.
Poland--History--Periodicals
Princeton subject headings:
Baltic States--History--Periodicals.
Belarus--History--Periodicals.
Periodicals.
Poland--History--Periodicals.