00281nam a2200109Ia 4500008004100000041000800041082002000049100002200069245004500091260002700136300000800163211209s9999 xx 000 0 und d aeng a621.314 N71 OPE aOPENSHOW TAYLOR O aUTILISATION OF ELECTRIC ENERGY SI UNITS  aBOMBAYbORIENT LONGMAN a416