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*008000328s2000    xx#           000 0 eng
*019  $bk
*08230$a301.01
*100  $aHagen, Roar$_12967800
*245  $aIntroduction: Observing Luhmann
*300  $aS. [3]-4
*600  $aLuhmann, Niklas$_132690000
*650  $asamfunnsteorier$9nor$2norart$_132690200
*650  $asosiologi$2norart$_11132900
*773  $tActa sociologica$gVol. 43, no. 1 (2000)$x0001-6993$w(NO-LaBS)927137(tnr)
*8564 $uhttps://doi.org/10.1177/000169930004300101
*999  $z274102$anorart:274102
^