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classification_ss:"77.53 (Entwicklungspsychologie: Allgemeines)"
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classification_ss:"F 111"
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classification_ss:"MBK 6"
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classification_ss:"Psy 157"
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language_ss:"d"
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Spitzer, M.: Digitale Demenz : wie wir uns und unsere Kinder um den Verstand bringen (2012)
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