Khan, Waqas Ahmed MONITORING AND COMPARING THE FORMALDEHYDE CONCENTRATION OVER ISLAMABAD AND PIR SOHAWA VALLEY BY EXPLOITING MAX-DOAS SATELLITE OBSERVATIONS Waqas Ahmed Khan. - Islamabad: IESE NUST, 2016. - 50 p. : ill. ; 30cm. ISBN: Subjects--Topical Terms: Enviormental Sciences MS-Thesis. Dewey Class. No.: 628.05