TY  - BOOK
AU  - Zacker, Craig 
TI  - Compete reference upgrading and troubleshooting networks 
SN  - 0-07-041267-7 
U1  - 005.13 ZAC  
PY  - 2000///
CY  - Tata mcgraw hill 
PB  - New Delhi 
KW  - PROGRAMMING LANGUAGE
ER  -