000 00364nam a2200145Ia 4500
040 _cPK-LaCSN
082 _a510
_bCHA
100 _aAmin, Prof Muhammad
245 0 _aMathematics ptb for class 12
260 _c2021
_bPunjab Curriculum Text book Board
_aLahore
300 _a394
942 _cTR
999 _c859412
_d859389