000 00306nam a2200133Ia 4500
008 240227s9999 xx 000 0 und d
041 _aSinhala
245 0 _aගණිතය
260 _bNIE,
_c1999
300 _axii,105p.
_c28cm
650 _aMathematics
658 _aDIstance Education
942 _cMD
999 _c97971
_d97971