TY  - BOOK
AU  - Dumas, M.Barry
AU  - Schwartz, Morris
TI  - Principles of Computer Networks and Communications 
SN  - 9788131790625
U1  - 621.3821 
PY  - 2012///
CY  - New Delhi
PB  - Pearson Education
KW  - Computer Networks
KW  - Electronic Communication
ER  -