000			00315nam a2200145Ia 4500
008			221121s9999 xx 000 0 und d
041			_aENGLISH
082			_bKHA
100			_aKHASNIS, B
245		0	_aPEDAGOGY OF MATHEMATICS
260			_bAPH PUBLICATION
300			_a168
650			_aMATHS
942			_cREF
999			_c177738 _d177738