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  • × author_ss:"Helmerich, M."
  • × theme_ss:"Formale Begriffsanalyse"
  • × year_i:[2010 TO 2020}
  1. Helmerich, M.: Liniendiagramme in der Wissenskommunikation : eine mathematisch-didaktische Untersuchung (2011) 0.00
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