TY  - BOOK
AU  - Stallings, William
TI  - Data and computer communications
SN  - 9788131715369
U1  - 001.64404 18th.
PY  - 2007///
CY  - Delhi
PB  - Pearson Education 
KW  - Data transmission systems
KW  - Data communication systems
KW  - Computer communication systems
ER  -