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Hershkowitz, Rina. (). Abstraction in context: epistemic actions (No. 2. Vol. 32 March-2001). : p Journal for Research in Mathematics Education.

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Hershkowitz, Rina. Abstraction in context: epistemic actions. No. 2. Vol. 32 March-2001 : p Journal for Research in Mathematics Education, . Index Artikel.

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Hershkowitz, Rina. Abstraction in context: epistemic actions. No. 2. Vol. 32 March-2001 : p Journal for Research in Mathematics Education, . Index Artikel.

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Hershkowitz, Rina. Abstraction in context: epistemic actions. No. 2. Vol. 32 March-2001 : p Journal for Research in Mathematics Education, . Index Artikel.