LEADER 00937nam0-22003131i-450- 001 990001499180403321 010 $a0-8058-0013-1 035 $a000149918 035 $aFED01000149918 035 $a(Aleph)000149918FED01 035 $a000149918 100 $a20021216d1987----km-y0itay50------ba 101 0 $aeng 102 $aGB 105 $aa---a---001yy 200 1 $aProblems of representation in the teaching and learning of matematics$fClaude Janvier 210 $aHillsdale, New Jersey$cLawrence Erlbaum Associates$d1987 215 $a247 p.$cill.$d23 cm 610 0 $aInsegnamento della matematica 676 $a372.7 702 1$aJanvier,$bClaude 801 0$aIT$bUNINA$gRICA$2UNIMARC 901 $aBK 912 $a990001499180403321 952 $aCPDM-97-053$b85 CPDM$fMA1 959 $aMA1 962 $a97-XX 996 $aProblems of representation in the teaching and learning of matematics$9377274 997 $aUNINA