000 00378nam a2200145Ia 4500
040 _cPK-LaCSN
082 _a540
_bQUR
100 _aQureshi, Prof Dr. Shams-Ul- Haq
245 0 _aChemistry ptb for class 11
260 _c2022
_bPunjab Curriculum and Text Book Board
_aLahore
300 _a346
942 _cTR
999 _c859742
_d859719