000 00286nam a22001217a 4500
020 _a9789697342013
040 _cPK-LaCSN
082 _aTR-500
_bOXF
245 _aInternational Secondary Science
260 _aPakistan
_bOxford university press
942 _2ddc
_cTR
999 _c869773
_d869750