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Fischer, Hans Ernst. (). Framework for conducting empirical observations of learning processes (No. 2. Vol. 77 April-1993). : Science education.

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Fischer, Hans Ernst. Framework for conducting empirical observations of learning processes. No. 2. Vol. 77 April-1993 : Science education, . Index Artikel.

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Fischer, Hans Ernst. Framework for conducting empirical observations of learning processes. No. 2. Vol. 77 April-1993 : Science education, . Index Artikel.

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Fischer, Hans Ernst. Framework for conducting empirical observations of learning processes. No. 2. Vol. 77 April-1993 : Science education, . Index Artikel.