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|a 9340479
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|a Sistema de Bibliotecas de la Universidad de Costa Rica
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|a 372.350.44
|b H838h
|2 23
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|a Badders, William
|e Autor/a
|4 aut
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|a Earth science v.2 (Unit C y D) /
|c [program authors William Badders ... y otros]
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|a Unit C. Earth, Our Home--Unit D. Weather and the Sky
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|7 nnam
|t Houghton Mifflin science
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|a 11-SEP-2012 - MURILLO HERNANDEZ, XINIA
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| 917 |
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|a 10-SEP-2012 - BUSTAMANTE MORA, CYNTHIA
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