00362nam a22001337a 4500020001500000040000900015082001600024100002600040110002500066245005200091250001600143260004700159650002200206  a8120312414  cNUST  a005.43bTAN  aTanenbaum, Andrew S.   aWoodhull, Albert S.   aOperating Systems : bDesign and Implementation  a2nd Edition  aNew Delhi:bPrentice Hall of India,c2003.  aOperating Systems