Stallings, William.
Data and computer communications /by William Stallings - 8th ed. - New Delhi Pearson Education 2012 - xvi, 834 p.
8131715369
Data communications
005.71 / STA
Data and computer communications /by William Stallings - 8th ed. - New Delhi Pearson Education 2012 - xvi, 834 p.
8131715369
Data communications
005.71 / STA