Columbia subject headings:
Poland--Foreign relations--Russia (Federation)
Poland. Treaties, etc. 1921 March 18.
Russia (Federation)--Foreign relations--Poland.
Harvard subject headings:
Poland--Foreign relations--Russia (Federation)
Poland--Foreign relations--Soviet Union
Poland. Treaties, etc. 1921 March 18
Poland. Treaties, etc. 1921 March 18.
Riga, Treaty of, 1921.
Russia (Federation)--Foreign relations--Poland.
Soviet Union--Foreign relations--Poland.
Princeton subject headings:
Poland--Foreign relations--Soviet Union.
Riga, Treaty of, 1921.
Soviet Union--Foreign relations--Poland.