TY  - BOOK
AU  - Helfrick, Albert, D Cooper, William, D 
TI  - Modern electronic instrumentation and measurement techniques 
SN  - 978-81-203-0752-0 
U1  - 621.37 HEL  
PY  - 2010///
CY  - Prentice hall of india 
PB  - New Delhi 
KW  - INSTRUMENT AND MEASURMENTATION
ER  -