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*1001 $aCarlsen, Martin$d1975-$0(NO-TrBIB)2073277$4aut$_85630000
*24510$aGeometric series and mathematical mastery and appropriation$cMartin Carlsen
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*300  $aS. 203-215
*7730 $aNordic Conference on Mathematics Teaching(4 : 2005 Trondheim)$tRelating practice and research in mathematics education$dTrondheim : Tapir Academic Press, cop. 2007$z9788251922128$w990701936304702201
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