Histoire de la diplomatie secrète, 1914-1945. Lettre-préf. du prince Xavier de Bourbon-Parme.
Launay, Jacques de.
[Genève, Éditio-Service,
1974]
First published in 1965 under title: Histoire contemporaine de la diplomatie sécrète, 1914-1945.
Includes bibliographical references.
World War, 1914-1918
World War, 1939-1945