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|a Sistema Bibliotecario Universidad de El Salvador
|b spa
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|a 372.7
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|2 21
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|a Cascallana, M.ª [María] Teresa
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| 245 |
1 |
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|a Iniciación a la matemática :
|b materiales y recursos didácticos /
|c M.ª [María] Teresa Cascallana
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| 260 |
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|a Madrid :
|b Santillana,
|c 1999
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| 300 |
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|a 228, [4] p. :
|b il. ;
|c 22 cm
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|2 rdacontent
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|a Aula XXI ;
|v no. 40
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| 504 |
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|a Bibliografía : p. 227-228
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| 650 |
|
7 |
|2 lemb
|a Matemática
|x Enseñanza
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| 650 |
|
7 |
|2 lemb
|a Materiales de enseñanza
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| 830 |
|
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|a Aula XXI ;
|v no. 40
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| 942 |
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