*0011578015 *008910129s1990 xx# 000 0 eng *019 $bk *08230$a155.413 *100 $aJunefelt, Karin$_166651800 *245 $aThe zone of proximal development and communicative development$cKarin Junefelt *300 $aS. [135]-148 *773 $tNordic journal of linguistics$gVol. 13, no. 2 (1990)$x0332-5865$w(NO-LaBS)588923(tnr) *999 $z9100125864$anorart:9100125864 ^