Columbia subject headings:
Germany--Relations--Poland--Periodicals.
Poland--History--Periodicals.
Poland--Relations--Germany--Periodicals.
Harvard subject headings:
Germany--Relations--Poland--Periodicals.
Poland--History--Periodicals
Poland--Relations--Germany--Periodicals.
Princeton subject headings:
Germany--Relations--Poland--Periodicals.
Periodicals.
Poland--History--Periodicals.
Poland--Relations--Germany--Periodicals.