Forouzan, Behrouz A.
Data communications and networking
McGraw-Hill, 2002
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Forouzan, Behrouz A.
Data communications and networking
McGraw-Hill, 2013
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Stallings, William
Business data communications
Prentice-Hall, 2001
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Dennis, Alan, 1951-
Fundamentals of business data communications
John Wiley & Sons, 2012
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Dennis, Alan, 1951-
Fundamentals of business data communications
John Wiley & Sons, 2012
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