00304nam a2200109Ia 4500008004100000082002400041100001800065245005300083250001200136260003800148300000800186240913s9999||||xx |||||||||||||| ||und||  aGS    005.43  RIT/O  aColin Ritchie 0aOperating Systems incorporating Unix and Windows  a1st Ed.  bBPB PublicationsaNew Delhic2003  a277