TY  - BOOK
AU  - Helfrick, Albert D
AU  - Cooper, W D.
TI  - Modern electronic instrumentation and measurement techniques
SN  - 8120367526
U1  - 621.38154 
PY  - 2007///
CY  - New Delhi
PB  - Prentice Hall Of India
KW  - Applied physics
ER  -