Mahesar, Mushtaq Yaseen. Study of digital electronic exchange Karachi / Mushtaq Yaseen Mahesar...[et.al.] - MUET, Jamshoro ; Electronic Engineering, IICT, 1985. - xii, 283p. : ill. ; 30 cm. Includes References. Subjects--Topical Terms: Electronic Engineering. Dewey Class. No.: / MAH