TY  - BOOK
AU  - Stallings, William. 
TI  - Business Data Communications 
SN  - 8178086824
U1  - 004.65 
PY  - 2001///
CY  - Delhi
PB  - Pearson Education, 
N1  - This book is having Appendix A to B from page no 611 to 620.
ER  -