TY  - BOOK
AU  - Helfrick , Albert D.
TI  - Modern Electronic Instrumentation and Measurement Techniques
SN  - 81-297-0731-4
U1  - 621.38154 
PY  - 1990///
CY  - New Delhi
PB  - Pearson Education
KW  - Engineering
KW  - Definitions , Types of Error , Problems
ER  -