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Pfleger, C.: Lernprogramm für die Umsetzung von RAK in Aleph500 (1999)
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Pfleger, C.: ¬Die Didaktik des Fernunterrichts in Formalerschließung unter besonderer Berücksichtigung von Lernprogrammen (2003)
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Pfleger, C.: ¬Die Didaktik des Fernunterrichts in Formalerschließung (2003)
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