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082 _a621.31921 W132
100 _aWANGNER,C.F
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245 0 _aSYMMETRICAL COMPONENTS
260 _bMC GRAW, NEW YORK
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300 _a23X15
856 _uhttp://idr.l3.nitk.ac.in/jspui/handle/123456789/18132
942 _cBK