Columbia subject headings:
Harvard subject headings:
Archives générales du Royaume (Belgium)--Catalogs.
Belgium--Foreign relations--1914-1951--Sources--Bibliography--Catalogs.
Belgium--Foreign relations--1951---Sources--Bibliography--Catalogs.
Belgium--Foreign relations--Sources--Bibliography--Catalogs.
Belgium--History--1914---Sources--Bibliography--Catalogs.
Jaspar, Marcel-Henri, 1901-1982--Archives--Catalogs.
Princeton subject headings:
Archives générales du Royaume (Belgium)--Catalogs.
Belgium--Foreign relations--1914---Sources--Bibliography--Catalogs.
Belgium--History--1914---Sources--Bibliography--Catalogs.
Jaspar, Marcel-Henri, 1901-1982--Archives--Catalogs.