Columbia subject headings:
Harvard subject headings:
Chad--Description and travel
Soldiers--Chad--Correspondence.
Soldiers--France--Correspondence
Vinchon, Raphaël--Correspondence.
World War, 1939-1945--Chad.
World War, 1939-1945--Participation, French.
Princeton subject headings:
Chad--Description and travel.
Soldiers--Chad--Correspondence.
Soldiers--France--Correspondence.
Vinchon, Raphaël--Correspondence.
World War, 1939-1945--Chad.
World War, 1939-1945--Participation, French.