Geological Reconnaissance Work By Surveys Of Twenty Dam Sites In The Regions Of Souss-Massa And Guelmim-Oued Noun: - Lot No. 1: Geological Reconnaissance Work By Drilling Of Eleven Dam Sites In The Souss-Massa Region; - Lot No. 2: Geological Reconnaissance Work By Drilling Of Nine Dam Sites In The Guelmim-Oued Noun Region