Nawaz,Mehwish Haq Improving Harvested Rain Water Quality of NUST Lakes by Three Stage Portable Water Filter Mehwish Haq Nawaz - Islamabad IESE (SCEE) NUST 2017. - 63p. H.B - MS Environmental Science . Thesis MS ES Subjects--Topical Terms: Environmental Science Dewey Class. No.: 628 MEH