*0011467540 *008811220s1981 xx# 000 0 nob *019 $bk *08230$a516 *100 $aUlven, Hans-Petter$_155176400 *245 $aPuslespill og geometri *300 $aS.4-6 *773 $tSymbol$gÅrg.6, nr.3 (1981)$x0333-0346$w(NO-LaBS)801321(tnr) *999 $z8100039555$anorart:8100039555 ^