TY  - BOOK
AU  - Singh R P
AU  -  Sapre S D
TI  - Communication systems :  Analog and digital
SN  - 0074603396
U1  - D65,8(B), N5;P3 
PY  - 2003///
CY  - New Delhi
PB  - Tata McGarw- Hill Publishing Company Limited India 
KW  - ENGINEERING
ER  -