000 00281nam a2200109Ia 4500
008 250224s9999 xx 000 0 und d
020 _a9780195747041
082 _a372.7043LET
245 0 _aLET'S Do mathematics activities
260 _bOxford university press
_c2018
942 _cBK
999 _c459168
_d459168