000 003390000a22001330004500
008 151104t1981 xxu||||| |||| 00| 0 eng d
041 _aeng
080 _a621.38/.39
_bV5
942 _cBK
100 _aVirmani, S.K.
245 _aElectronics and communication engineering
260 _aNew Delhi
_bSatya Prakashan
_c1981
300 _a186p.
999 _c141347
_d141347