Author
Commission interuniversitaire du microfilm (Belgium)
2
Fonds national de la recherche scientifique (Belgium)
2
British Library of Political and Economic Science
1
Great Britain. Foreign Office
1
Great Britain. Public Record Office
1
Heyse, Théodore, 1884-1963
1
Morel, E. D. (Edmund Dene), 1873-1924
1
Starr, Frederick, 1858-1933
1
Stengers, Jean
1