TY  - BOOK
AU  -  Zacker, Craig
TI  - Upgrading and troubleshooting networks: :the computer reference
SN  - 9780072122565
U1  - 004.6 Z12u 
PY  - 2004///
CY  - New Delhi
PB  - Tata McGraw-Hill
KW  - Computer networks
KW  - Maintenance and repair
ER  -