000 00337nam a2200133Ia 4500
008 240227s9999 xx 000 0 und d
041 _aSinhala
245 0 _aස්වභාවික සංසිද්ධි
260 _bNIE,
_c2009
300 _a62p.;
_bill.;
_c29cm
650 _aScience
658 _aSecondary Course
942 _cMD
999 _c98893
_d98893