000 00259nam a22001097a 4500
082 _a621.384 092
_bBEV/G
100 _aBeverley Birch
245 _aGiglielmo Marconi
260 _aHyderabad:
_bOrient Longman,
_c1997.
650 _aApplied Physics
942 _cBK
999 _c175186
_d175186