*0011646728 *008950302s1994 xx# 000 0 nob *019 $bk *08230$a513.2 *100 $aBjerknes, Rolf$_168364200 *245 $aHoderegning *300 $aS. 41-42 : ill. *773 $tSchola$gÅrg. 2, nr 6 (1994)$x0804-5119$w(NO-LaBS)431647(tnr) *999 $z9500185920$anorart:9500185920 ^