Carte topographique de l'Etat-Major : Carte géologique détaillé.
Great Britain.War Office.General Staff.Geographical Section.
[London] : War Office,
1941-44.
Date of information 1876-1930.
Copied from original French maps.
Geological information overprinted on topographic base.
Graphic index in central GSGS file.
Northern third of France, plus Languedoc, Provence and most of Corsica.
Geology
France.