TY  - BOOK
AU  - Helfrick, Albert D.
AU  - Cooper, William D.
TI  - Modern electronic instrumentation and measurement techniques
SN  - 8120307526
U1  - 621.38154 
PY  - 1990/// - R 2006
CY  - New Delhi
PB  - Prentice-Hall of India
ER  -