Hashmat,Amer Jamal A Study To Evaluate Economical and Efficient Mix Of Alum With Natural Polymer In Coagulation-Flocculation Processes Amer Jamal Hashmat - Rawalpindi IESE (SCEE) NUST 1999. - 88 p. PB. - MS Environmental Engineering . Thesis MS EE Subjects--Topical Terms: Environmental Engineering LC Class. No.: / 628 HAS Dewey Class. No.: 628 HAS