Columbia subject headings:
Africa--Research--Poland--History--20th century.
Asia--Research--Poland--History--20th century.
Middle East--Research--Poland--History--20th century.
Oriental philology--Research--Poland--History--20th century.
Harvard subject headings:
Africa--Research--Poland--History--20th century.
Asia--Research--Poland--History--20th century.
Middle East--Research--Poland--History--20th century.
Oriental philology--Research--Poland--History--20th century.
Princeton subject headings:
Africa--Research--Poland--History--20th century.
Asia--Research--Poland--History--20th century.
Middle East--Research--Poland--History--20th century.
Oriental philology--Research--Poland--History--20th century.