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  • × year_i:[1970 TO 1980}
  1. Piaget, J.: Biologie und Erkenntnis : über die Beziehungen zwischen organischen Regulationen und kognitiven Prozessen (1974) 10.09 
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    Piaget, J.
  2. Piaget, J.: Einführung in die genetische Erkenntnistheorie (1973) 10.09 
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