000 00358nam a2200145Ia 4500
008 150502s9999||||xx |||||||||||||| ||und||
082 _aHEL
100 _a"Helfrick, Alberts D."
245 _aModern Electronic Instrumantation & Meosurement Technology
250 _a2009
260 _bPHI Pub.
300 _aHEL
600 _aEngineering
942 _2ddc
_cBK
999 _c9193
_d9193