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|a 9780325003535
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|a 9368768
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|a Sistema de Bibliotecas de la Universidad de Costa Rica
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|a 372.704.4
|b F749y
|2 23
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|a Fosnot, Catherine Twomey
|e Autor/a
|4 aut
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|a Constructing number sense, addition, and subtraction /
|c Catherine Twomey Fosnot, Maarten Dolk
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|a Dolk, Maarten Ludovicus Antonius Marie
|d 1952-
|e Autor/a
|4 aut
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|7 nnam
|t Young mathematicians at work
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|a 12-JUN-2013 - CALDERON ZUÑIGA, ANA CRISTINA
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| 917 |
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|a 31-MAY-2013 - MATAMOROS GRANADOS, EILLING
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