TY  - BOOK
AU  - Helfrick, Albert D.
AU  - Cooper, William D. 
TI  - Modern Electronic Instrumentation and Measurement Techniques  
SN  - 9788120307520
U1  - 621.381 
PY  - 1990///
CY  - Delhi : 
PB  - PHI Learning Private Limited, 
N1  - Includes index.
ER  -