000 00248nam a2200109Ia 4500
008 230401s9999 xx 000 0 eng d
100 _aNagrath(IJ)
245 0 _aElectronic analog and digital
250 _aXIth
260 _bPHI
942 _2ddc
_cBTECH
999 _c6060
_d6060