TY  - BOOK
AU  - Singh,R.P.
AU  - Sapre,S.D.
TI  - Communication systems: analog and digital 
SN  - 9781259004605
PY  - 2012///
CY  - New Delhi
PB  - Tata McGraw Hill
KW  - Telecommunication systems
KW  - Digital communications
N1  - Includes index
ER  -