TY  - BOOK
AU  - Helfrick,Albert D.
AU  - Cooper,William David
TI  - Modern Electronic Instrumentation and Measurement Techniques
SN  - 9788120307520
U1  - 621.38154 
PY  - 1990///,2010
CY  - New Delhi
PB  - Prentice-Hall of India Private Limited
ER  -