000			00280nam a2200121Ia 4500
008			220811s9999 xx 000 0 und d
245			_aMATHEMATICS TODAY AND CHEMISTRY TODAY
260			_c2020-2020
500			_a"11,12,11,12"
500			_a38
500			_aNOV-DEC
942			_cBV
999			_c23529 _d23529