000 00323nam a2200145Ia 4500
020 _a9698588086
082 _b1540
_a500
100 _a"Thomaihoong"
245 0 _aExploring Science 4
260 _bUshba
_aKarachi
_c2012
300 _a21
944 _cTR
999 _c653802
_d653802