000 00553nam a2200205 a 4500
005 20210219153513.0
008 991125n 000 0 eng u
035 _aUPN01000103625
100 _aVance, James H.
222 _aSCHOOL SCIENCE AND MATHEMATICS
245 _aUnderstanding equivalence : a number by any other name
300 _a263-266
362 _a92, No. 5
505 _aFebrero 1993
653 0 _aENSE\197ANZA MATEMATICA
653 0 _aFORMACION CONCEPTUAL
653 0 _aFRAGMENTOS
904 _aAC
_b041436
905 _aArticulo
999 _c78651
_d78651