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Cite as:


Alatorre, S., Cortina, J.L., Sáiz, M., & Méndez, A. (Eds.). (2006). Proceedings of the Twenty Eighth Annual Meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education. Mérida, Mexico: Universidad Pedagógica Nacional.
 

ISBN

 
970 – 702 – 202 – 7