Viswanathan Thiagarajan Telecommunication switching systems and networks - 2nd - Delhi PHI Learning 2015 - xx,620p. cm. ISBN: INR 395.00 Standard No.: 132746 Source: 133, 15/03/2017, Aviva Books Company Textual Subjects--Topical Terms: Electronic Science Dewey Class. No.: D65,4, Q5