000 00288 a2200133 4500
082 _a530
_bOPE
090 _c28306
_d49329
245 _aPhysics
_bElectronics
260 _aNugegoda
_bOpen University
300 _a247 p.
_c21 cm
650 _aPhysics
650 _aElectronics
942 _cL
999 _c54952
_d54952