TY  - BOOK
AU  - Singh,R.P.
TI  - Communication systems: analog and digital 
SN  - 9780070634541
U1  - 621.382 20
PY  - 2007/// [reprinted 2011]
CY  - New Delhi
PB  - Tata McGraw-Hill
KW  - Telecommunication
KW  - Digital communications
N1  - Includes bibliographical references and index
ER  -