Ahmed,Anwar A Comparative Study Of Metallic Coagulants For Rawal Lake Filtration Plant Anwar Ahmed - Islamabad IESE (SCEE) NUST 2014. - 99 p. HB. - MS Environmental Engineering . Thesis MS EE Subjects--Topical Terms: Environmental Engineering LC Class. No.: 628 AHM Dewey Class. No.: 628 AHM