TY  - BOOK
AU  -  Helfrick, Albert D. 
AU  - Cooper,W.D
TI  - Modern instrumentation and mesurement techniques
SN  - 9788120307520
U1  - 621.38154/HEL/M 
PY  - 1990///
CY  - New Delhi
PB  - PHI Learning
KW  - Electric measurements
KW  - Electronic instruments
KW  - Electronic measurements
KW  - Electric meters
ER  -