Sultan, Sohaib SYSTEM ANALYSIS TO ENHANCE THE EFFICIENCY OF TELENOR OPERATIONAL SYSTEM SUPPORT (OSS) DEPARTMENT / Sohaib Sultan. - Islamabad: CEME NUST, 2013. - 118 p. : ill. ; 30cm. ISBN: Subjects--Topical Terms: Manufacturing Engineering and Management MS-Thesis. Dewey Class. No.: 620.1