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| 100 | 1 | _aCastillo Sánchez, Carlos Francisco; Castro Sánchez, Nydia | |
| 245 | 1 | 0 | _aDescubrir 8/ Carlos Francisco Castillo Sánchez; Nydia Castro Sánchez |
| 250 | _a2 | ||
| 260 | _aBogotá - Editorial Norma | ||
| 300 | _a336p. | ||
| 490 | 0 | _aSerie: Descubrir, 8 | |
| 490 | 0 | _aCiencias Naturales y | |
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