000 00289nam a2200121Ia 4500
008 220201s1963 xx 000 0 eng d
082 _a621.386
_bFRA
100 _aFraser, W
245 0 _aTelecommunication
260 _abombay
_bAsia publishing house
_c1963
300 _a772
942 _2ddc
999 _c13949
_d13949