Romana Khan Quantitative Analysis Of Disinfection By-Products In Drinking Water Distribution Network Using Spme and GC Romana Khan - Islamabad IESE (SCEE) NUST 2015. - 76 p. HB. - MS Environmental Science . Thesis MS ES Subjects--Topical Terms: Environmental Science LC Class. No.: 363.7 ROM Dewey Class. No.: 363.7 ROM