00334nam a2200133Ia 4500008004100000020001500041041001200056082001900068100002700087245002200114260003300136300001700169650001400186231217s9999    xx            000 0 und d  a8188429007  aEnglish  a001.642  BAL;6  aBalakrishna Prasad, P. 0aOperating systems  c2003bScitech Publ.aChennai  a14.9, 51, 14  aOperating