Shahid Umair, Syed Groundwater Vulnerability Assessment of Lahore City based on Modified DRASTIC Model in GIS / Syed Umair Shahid. - Islamabad : IGIS(SCEE) - NUST, 2017. - viii, 106 p. ill. ; 30cm. ISBN: Subjects--Topical Terms: PhD-Remote Sensing and Geographical Information Systems Dewey Class. No.: 621.3678