TY  - BOOK
AU  - Helfrick, Albert D. .
AU  - Coper, William D. .
TI  - Modern electronic instrumentation & measurement techniques
SN  - 81-203-0752-6
U1  - 621.381 22
PY  - 1998///
CY  - New Delhi
PB  - Prentice Hall
ER  -