TY  - BOOK
AU  - Gupta, J B
TI  - Electronic devices and circuits
SN  - 9788185749754
U1  - 621.381 
PY  - 2008///
CY  - New Delhi
PB  - S K Kataria and sons
KW  - Computer
KW  - Electron emission
KW  - Electron tubes
ER  -