TY  - BOOK
AU  - Deshpande, N.D Deshpande, D.A & Rangole, P.K 
TI  - Communication electronics 
SN  - 0-07-4515985 
U1  - 621.381 DES  
PY  - 2001///
CY  - Tata mcgraw hill 
PB  - New Delhi 
KW  - ELECTRONICS
ER  -