Nezha, E.M., Mohamed, E.W., Rajae, A., Ridouane, S. and Sanae, B. 2016. Evaluation of Vulnerability of the Underground Aquifer of the Gharb Plain with the Help of Gis and Drastic Method (Nw of Morocco). European Scientific Journal, ESJ. 12, 36 (Dec. 2016), 387. DOI:https://doi.org/10.19044/esj.2016.v12n36p387.