00354nam a2200133Ia 4500008004100000040001700041041001200058082001600070100002300086245003700109250001200146260004400158300001800202230917s9999||||xx |||||||||||||| ||und||  e116001aMAIN  aEnglish  a004.66 S18D  aStallings, william 0aData and computer communications  a8th ed.  aNew DelhibPrertice Hall of Indiac2007  axvii, 878p p.