000 00387 a2200145 4500
020 _a0074621351
082 _a621.381537
_bGOP
090 _c11622
_d16696
100 _aGopal, M.
245 _aControl systems
_bprinciples and design
260 _aNew York
_bMcGraw - Hill
_c1997
_g1997
300 _axv, 999p.
_c23cm.
650 _aSWITCHING, CONTROL,TRIGGER CIRCUITS, RELAYS
942 _cL
999 _c40063
_d40063