TY  - GEN
AU  - Albert.D.Helfrick ,William.D.Cooper.
TI  - Modern Electronic Instrumentation and Techniques
T2  - 22862
SN  - 8120307526
U1  - 621.381 
PY  - 2013///
CY  - New Delhi.
PB  - PHI Learning Publications.
KW  - Modern Electrocic
ER  -