*0011622665
*008940103s1993    xx#           000 0 nob
*019  $bk
*08230$a523.0074
*100  $aUrke, Torbjørn$_133017900
*245  $aPlanetarium$bkva er det, og kvifor?
*300  $aS. 273-278 : ill.
*773  $tNaturen$gÅrg. 117, nr 6 (1993)$x0028-0887$w(NO-LaBS)533618(tnr)
*999  $z9400166704$anorart:9400166704
^