000 00348nam a2200145Ia 4500
040 _cPK-LaCSN
082 _a001.642
_bPUN
100 _aMuhammad Atif Chattha
245 0 _aComputer Science 9
260 _c2021
_bPunjab Text Book board
_aLahore
300 _a122
942 _cTB
999 _c862738
_d862715