*0011521874
*008871201s1987    xx#           000 0 nob
*019  $bk
*08230$a155.418
*100  $aMellin-Olsen, Nora$_164117100
*245  $aOm Piaget, Vygotsky og leik$cNora Mellin-Olsen
*300  $aS. 18-19 : port.
*600  $aPiaget, Jean$_47318400
*600  $aVygotskij, Lev Semenovic$_133025100
*773  $tSpesialpedagogikk$gÅrg. 36, nr 4 (1987)$x0332-8457$w(NO-LaBS)549146(tnr)
*999  $z8700089117$anorart:8700089117
^