TY  - BOOK
AU  - Leach Donald P
AU  - Leach Donald P
AU  - Malvino Albert Paul
AU  - Saha Goutam
TI  - Digital Principles and Applications
U1  - 5.72 
PY  - 2006///
CY  - New delhi
PB  - Tata Mc Graw Hill Publishing Company Ltd.
ER  -