00330nam a22001337a 4500003000400000020001800004040000600022082001000028082001000038100002100048245007700069260002400146300002600170OSt  a9789380027579  c0  222a0  a658.5  aDahiya, Er, R.S.  a Sub- station enginesring, design,  concepts and computer applications /  bNew Delhi,cc 2010.  a270 p, ;bNAc 24 cm.