Proposal for a new method for assessing the vulnerability of aquifers to contamination, ISSN 1737-3638 - Drias Tarek; Abdelhamid Khedidja; Belloula Moufida (3rd International Conference on Integrated Environmental Management for Sustainable Development "ICIEM 2018" , May 02 to 05, 2018. Sousse, Tunisia, 2018)