000 00262nam a2200121Ia 4500
008 200701s1997 xx 000 0 eng d
100 _aBERDE.M.S
245 0 _aTHYRISTOR ENGINEERING
250 _a9th
260 _bS CHAND
_c1997
300 _a732
942 _2ddc
_cGE
999 _c497
_d497