Erkki Pehkonen
Erkki Pehkonen er registreret som ophav eller bidragsyder til 10 udgivelser i perioden 1976 til 2001. Udgivelserne dækker emner som fx matematikundervisning.
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Published in undefined. Works are grouped by the oldest registered edition, but the work may have been created earlier.
Published in undefined. Works are grouped by the oldest registered edition, but the work may have been created earlier.
Published in undefined. Works are grouped by the oldest registered edition, but the work may have been created earlier.