Columbia subject headings:
Diplomats--Correspondence.
France--Foreign relations--Poland.
Poland--Foreign relations--France.
Poland--Foreign relations.
Harvard subject headings:
Diplomats--Correspondence
Diplomats--Poland--Biography
France--Foreign relations--Poland.
Poland--Foreign relations
Poland--Foreign relations--1918-1945
Poland--Foreign relations--France.
Łukasiewicz, Juliusz, 1892-1951
Princeton subject headings: