REZIG, A.; TIDJANI, L.; TIDJANI, K.; SAGGAÏ, S. CONTRIBUTION TO THE STUDY OF VULNERABILITY OF TERMINAL COMPLEX AQUIFER AND WELLHEAD PROTECTION AREA OF WATER CATCHMENT IN THE VALLEY OF EL-OUED. Algerian Journal of Arid Environment “AJAE”, v. 9, n. 2, p. 10, 30 maio 2021.