00350nam a2200133Ia 4500008004100000040001600041041001200057082001600069100002300085245003700108250001200145260004400157300001500201230917s9999||||xx |||||||||||||| ||und||  e96307aMAIN  aEnglish  a004.66 S18D  aStallings, William 0aData and computer communications  a7th ed.  aNew DelhibPrentice Hall of Indiac2003  axv, 847 p.