Columbia subject headings:
Harvard subject headings:
Germany--Foreign relations--Poland.
Martial law--Poland--History--20th century.
Poland--Foreign relations--Germany
Poland--History--1989-
Protest movements--Poland--History--20th century.
Princeton subject headings:
Germany--Foreign relations--Poland.
Martial law--Poland--History--20th century.
Poland--Foreign relations--Germany.
Poland--History--1989-
Protest movements--Poland--History--20th century.