000 00289nam a2200109Ia 45e0
008 181001s1987 xx 000 0 und d
100 _aLaster clay
245 0 _aThyristor theory and application
260 _aDelhi
_bB.P.B publ.
_c1987
300 _a181
942 _2ddc
_cBK
999 _c3912
_d3912