000 00293nam a2200121Ia 4500
008 220201s1999 xx 000 0 eng d
082 _a621.381548
_bHEL
100 _aHelfrick
245 0 _aModern instrumenation+measerment tech.
260 _aDelhi
_bPHI
_c1999
300 _a446
942 _2ddc
999 _c35722
_d35722