Columbia subject headings:
Archiwum Akt Nowych w Warszawie--Catalogs.
Poland--Foreign relations--1918-1945--Sources--Bibliography--Catalogs.
Poland. Poselstwo (Czechoslovakia)--Archives--Catalogs.
Harvard subject headings:
Archiwum Akt Nowych w Warszawie--Catalogs.
Poland--Foreign relations--1918-1945--Sources--Bibliography--Catalogs.
Poland. Poselstwo (Czechoslovakia)--Archives--Catalogs.
Princeton subject headings:
Czechoslovakia--Foreign relations--Poland--Sources--Bibliography.
Poland--Foreign relations--Czechoslovakia--Sources--Bibliography.
Poland. Poselstwo. Czechoslovakia--Bibliography.