TY  - BOOK
AU  - Ali Syed Riffat.
TI  - Digital Switching Systems: System Reliability and Analysis
SN  - 0070010692
AV  - TK6397 A483D 1998
PY  - 1998///
CY  - New York
PB  - McGraw-Hill
KW  - ”SYSTEM ANALYSIS”
ER  -