00321nam a2200109Ia 4500008004100000020001800041100001600059245006100075250001900136260003600155650002000191240817s9999    xx            000 0 und d  a9790000000000  aSingh ,S.M. 0aElectric power generation transmission and distribution.  a621.312 Si64,e  c2012a New Delhib PHI Learning  a Electric power