000 00279nam a2200121Ia 4500
008 220201s2004 xx 000 0 eng d
082 _a510.62
_bGOP
100 _aGopal
245 0 _aDigital control variable method
260 _aDelhi
_bTMH
_c2004
300 _a998
942 _2ddc
999 _c37115
_d37115