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082 _a510.7 LOV
100 _aLovell, Kenneth
245 0 _aMathematics education reports: Intelectual growth and understanding mathematics
260 _aColumbus
_bERIC Information Analysis Centre for Science and Mathematics
_c1971
300 _a21p
650 _aMathematics
942 _cBK
999 _c155737
_d155737