TY  - BOOK
AU  - Ali, Syed Raffat
TI  - Digital Switching Systems
SN  - 9780070010697
U1  - 621.387 ALI 
PY  - 2008///
CY  - New Delhi
PB  - Tata McGraw-Hill Co. Ltd.
KW  - Electronics and Communication
KW  - Sears list of subject heading
KW  - Digital
ER  -