000 00213 a2200097 4500
001 4072
100 _aLedgerwood, B.K
245 _aControl engineering Manal
260 _a
_bMC-Graaw-Hill
_c
090 _c3291
_d3291
942 _aNUST-CAE
_cM
_c25458
999 _c239145
_d239145