000			00379nam a2200145Ia 4500
003			NIELib
008			220420s9999||||xx |||||||||||||| ||und||
082			_a510.7 _bGAN
242			_agaNitha vagu
245			_aගණිත වගු
260			_bDepartment of Education Publication, _c1976. _aColombo:
300			_a67p.; _c21 cm
650		0	_93728 _aMathematics
942			_2ddc _cSR
999			_c64233 _d64233