Stallings, Williams.
Business data communications. - 4th ed. - New Jersey : Prentice Hall, 2001. - 659p., index, references, glossary, appendix. ; cm.
0130903507
Business Data Communications.
TK5105.V279
Business data communications. - 4th ed. - New Jersey : Prentice Hall, 2001. - 659p., index, references, glossary, appendix. ; cm.
0130903507
Business Data Communications.
TK5105.V279