TY  - BOOK
AU  - A. D. Helfrick
AU  - W. D. Cooper
TI  - Modern Electronic Instrumentation & Measurment Techniques
SN  - 8120307526
U1  - 105.23 
PY  - 1999///
CY  - New Delhi
PB  - PHI
KW  - ECE
ER  -