TY  - BOOK
AU  - A D HELFRICK
TI  - MODERN ELECTRONIC INSTRUMENTATION AND MEASUREMENT TECHNIQUES
U1  - 621.381/HEL/MOD 
PY  - 1990///
CY  - NAW DELHI
PB  - PRENTICE HALL OF INDIA PRIVATE LIMITED
KW  - APPLIED PHYSICS
KW  - ENGINEERING
ER  -