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| 050 | _aQA241 N271c n°1 | ||
| 100 | _aMARTINEZ, SANCHEZ, JORGE | ||
| 245 |
_aConjuntos 1 _c National Council of Teachers of Mathematics ; tr. Federico Gaitan Anaya |
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| 250 | _a2 | ||
| 260 |
_aMexico _b Trillas |
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| 300 | _a63 p | ||
| 500 | _aTraduccion de: Topics in mathematics for elementary school teachers booklet | ||
| 650 | _a1. Aritmetica - Cimentos | ||
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