000 00289nam a2200145Ia 4500
100 _aWilliam/ B.W
250 _a2
942 _cBK
654 _apower
245 _aPower Electronics
260 _bELBS
_aHong Kong
_c1992
082 _a621.317
_bWIL
300 _a542
546 _aENGLISH
999 _c25016
_d25016