000 00418nam a2200181Ia 4500
003 STCL
008 230729s9999 xx 000 0 und d
020 _a9788121931021
040 _aSTCL
_cSTCL
_bEN
082 _222
100 _aKhanna, V K
245 0 _aDigital communication
260 _bS Chand and Company
_aNew Delhi
_c2003
300 _a268 p
365 _b150
546 _aEnglish
942 _2DDC
_e22
_cBK
999 _c90375
_d90375