00426nam a2200169Ia 4500 230718s9999 xx 000 0 und d 9788126509294 eng 621.385 BEL Bellamy J.C. Digital Telephony 3rd ed. Wiley India Rs. 419.00 Bellamy J.C. O:0109013-Sep-2010B:734326-Sep-2010 ETC 502.8 325781 325781 0 0 0 0 CCEP CCEP 2010-09-13 Radiant Book Service ETC 335.20 7343 0 621.385 CCEP-BK-36988 2023-07-18 00:00:00 502.8 419.00 2010-09-26 BK 036988