Erhard (Firm)1 map on two sheets : dissected and mounted on linen; sheets 57 x 87 and 53 x 87 cmgravé sur pierre par Erhard-Schièble ; Scale 1:400,000 ; Map originally folded ; Map most likely published by the Depot de la Guerre (France) ; Label pasted on back of both sheets: 'Imprimerie et Librarie Dubos Frères, a Alger, A. Dubos, successeur' ; Relief shown by hachures and spot heights ; Paris : Publisher not identified9942208254202441ark:/81985/n2bp00424Publisher not identifiedPublicAlgérie : Province de Constantine.MapsAlgeria--Constantine (Wilāyah)Algeria1854Northwestern University