Columbia subject headings:
Harvard subject headings:
Poland--Foreign relations--1918-1945--Sources.
Russo-Polish War, 1919-1920--Sources.
Warwaw (Poland), Battle of, 1920--Sources.
Princeton subject headings:
Europe, Eastern--Foreign relations--Poland--Sources.
Poland--Foreign relations--1918-1945--Europe, Eastern--Sources.
Russo-Polish War, 1919-1920--Diplomatic history--Sources.