Fatima,Mehak Effect of Co-Digestion of Leachate and Cotton Gin on The Production of Biogas from Cow Dung Mehak Fatima - Islamabad IESE (SCEE) NUST 2017. - 63p. H.B - MS Environmental Science . Thesis MS ES Subjects--Topical Terms: Environmental Science Dewey Class. No.: 628 MEH