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Issue Date
Title
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1995
La aplicación de la adición y la sustracción en la solución de problemas en el cuarto grado de educación primaria
Felipe Aguazul Tepetate
1995
La manipulación de objetos diversos para la comprensión de la adición
María Reyna Hernández Torres
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Felipe Aguazul Tepetate
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María Reyna Hernández Torres