000 00399nam a2200181Ia 4500
008 240220s9999 xx 000 0 und d
041 _aENG
082 _a621.381
100 _aSingh Ashok.
245 0 _aPrinciples of communication engineering.
260 _aNew Delhi
260 _bS Chand And Co.
260 _c1999
300 _a607p.
365 _b150
650 _aETC
942 _cDBK
999 _c26416
_d26416