00363nam a2200133Ia 4500008004100000020001500041041001200056082001600068100001700084245007000101260003400171300000800205650001600213221030s9999    xx            000 0 und d  a8175441658  aEnglish  a105.23bNag  aD. P. Nagpal 0aQuestins & Answers in Computer Science `O` Levelcby D. P. Nagpal  bWheeler Pub.aNew Delhic1999  a316  aBE Computer