000 00349nam a2200133Ia 4500
008 240227s9999 xx 000 0 und d
041 _a Sinhala
245 0 _aබලය හා බල සමතුලිතතාව
260 _bNIE,
_c1984
300 _a60p;
_bill.;
_c28cm
650 _aScience-Maths
658 _aDistance Education
942 _cMD
999 _c98185
_d98185