Stamper, David A.
Business data communications. - Massachusetts : Addison-Wesley, 1999. - 5th ed. 620p., index, references, glossary. ; cm.
0210304120
Business Communications.
TK5105.S783
Business data communications. - Massachusetts : Addison-Wesley, 1999. - 5th ed. 620p., index, references, glossary. ; cm.
0210304120
Business Communications.
TK5105.S783