000 00306nam a2200121Ia 4500
008 220201s1999 xx 000 0 eng d
082 _a621.3
_bANO
100 _aAnokh, Singh
245 0 _aPrinciples of communication engneering
260 _aNew delhi
_bS.Chand & co.
_c1999
300 _a607
942 _2ddc
999 _c27920
_d27920