LEADER 01032nam0 2200301 450 001 9910341239703321 005 20191024120017.0 010 $a0-9539983-6-3 100 $a20191024d2002---- km y0itay50 ba 101 0 $aeng 102 $aUK 105 $aa a 001yy 200 1 $aProceedings of the 26th conference of the international group for the psychology of mathematics education 21-26 July 2002$fEditors: Anne D Cockburn, Elena Nardi 210 $aNorwich, UK$cUniversity of East Anglia$d2002 215 $a4 v.$d21 cm 225 1 $aPsychology of Mathematics Education$v26 610 0 $aEducazione matematica 676 $a372.7 702 1$aD Cockburn,$bAnne 702 1$aNardi,$bElena 801 0$aIT$bUNINA$gREICAT$2UNIMARC 901 $aBK 912 $a9910341239703321 952 $aCPDM-97-104$bsenza inv.$fMA1 959 $aMA1 962 $aMSC 996 $aProceedings of the 26th conference of the international group for the psychology of mathematics education 21-26 July 2002$91565369 997 $aUNINA