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005 20260205042253.0
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100 _aDIENES Z P
245 0 _aEXPERIMENTAL STUDY OF MATHEMATICS-LEARING
260 _aLOND.
_bHUTCHINSON
_c1963
300 _a206
690 _aMATHEMATICS
942 _cBK
999 _c30504
_d30504