Waggan, Atif Hussain. To improve the pipe cutting process of bus body structure at Hino Pak through six sigma application / Atif Hussain Waggan. - MUET, Jamshoro : Mechanical Engineering, 2013. - xi, 52p. : ill. ; 30 cm. Includes References. Subjects--Topical Terms: Manufacturing engineering. Dewey Class. No.: / WAG