TY  - BOOK
AU  - Roddy, Dennis
TI  - Electronic Communications
U1  - 537.5 
PY  - 1900///
CY  - Newdelhi
PB  - PRENTICE HALL of India
KW  -  Natural sciences & mathematics
KW  - PhysicsElectricity & electronicsPhysics
KW  - General Stack
ER  -