000 00300nam a2200121Ia 4500
008 220201s1990 xx 000 0 eng d
041 _aENG
100 _aARORA, S P
245 0 _aCONVERTER ENGINEERING
260 _aLONDON
_bTHAMES AND HUDSON PUBLISHING COMPANY
_c1990
300 _a165
942 _2ddc
999 _c56415
_d56415