000 | 00462nam a2200169Ia 4500 | ||
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001 | 20573 | ||
008 | 200505s9999 xx 000 0 und d | ||
040 |
_aEC-QuPUC _bspa |
||
082 | 0 | 4 | _a511.3/N215nu |
110 | _aNational Council of Teachers of Mathematics. | ||
245 | 0 | _aNumeros y sus factores. | |
260 |
_aMexico, Mexico _bTrillas. _c1971 |
||
300 |
_a61 p. 23 cm. _b _c |
||
490 | 0 | _aColección Temas de Matematicas; 5. | |
650 | 4 | _aNUMEROS. | |
999 |
_c46556 _d46556 |
||
942 | 0 | 0 | _00 |