TY  - BOOK
AU  - Singh, R. P., 
AU  - Sapre, S. D., 
TI  - Communication Systems: Analog and Digital 
SN  - 0074603396
U1  - 621.382 
PY  - 1995///.
CY  - New Delhi
PB  - Tata McGraw-Hill Publishing Company Limited, 
ER  -