TY  - BOOK
AU  - Singh, R. P.  & Sapre, S. D.
TI  - Communication systems : analog and digital
SN  - 978-1-25-900460-5
U1  - 621.38 Sin/Sap 
PY  - 2012///
CY  - Tata McGraw Hill, New Delhi
KW  - Computer Science
ER  -