000 00255nam a2200109 4500
082 _a621.384CHO
100 _aChowdhry, B.S
245 _aTelecommunication technologies
260 _aHyderabad:
_bNasim Book Depot,
_c2004.
300 _a198p. ;
942 _cBK
999 _c10871
_d10871