TY  - BOOK
AU  - Gupta, R
TI  - Electronic instruments and systems:principles,maintenance & troublesh
SN  - 0-07-463629-4
U1  - 621.381 
PY  - 2001///
CY  - New Delhi
PB  - Tata Mcgraw-Hill
KW  - Electrical Electronics Communication
ER  -