000 00271nam a2200121Ia 4500
008 220201s2004 xx 000 0 eng d
082 _a4.25
_bNII
100 _aNIIT
245 0 _aProgrammable logic control
260 _aDelhi
_bPHI
_c2004
300 _a219
942 _2ddc
999 _c37040
_d37040