00410nam a22001577a 450000500170000000800410001702000210005804100080007908200170008710000230010424500370012725000120016426000410017630000080021765000270022520180206164748.0160428b        xxu||||| |||| 00| 0 eng d  a978-81317-1536-9  aeng  b00718a004.6  aStallings, william  aData and Computer Communications  a8th ed.  aNew DelhibPearson Education, c2008  a834  aInformation Technology