00421nam a2200157Ia 4500 230524s9999 xx 000 0 und d 621.3810287 COL Marion Cole 10991 "Introduction to Telecommunication : Voice, Data & the Internet" 2ND NEW DELHI Pearson 2003 608 Quantity Number: 1 Electronics BK 0 0 0 0 TATCL TATCL GEN 2023-05-24 0 621.3810287 COL 6212 2023-05-24 2023-05-24 BK CPES5203 15018 15018