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Roth, Wolff-Michael. (). Professionals read graphs: a semiotic analysis (No. 2. Vol. 32 March-2001). : p Journal for Research in Mathematics Education.

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Roth, Wolff-Michael. Professionals read graphs: a semiotic analysis. No. 2. Vol. 32 March-2001 : p Journal for Research in Mathematics Education, . Index Artikel.

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Roth, Wolff-Michael. Professionals read graphs: a semiotic analysis. No. 2. Vol. 32 March-2001 : p Journal for Research in Mathematics Education, . Index Artikel.

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Roth, Wolff-Michael. Professionals read graphs: a semiotic analysis. No. 2. Vol. 32 March-2001 : p Journal for Research in Mathematics Education, . Index Artikel.