000 00323pab a2200145 454500
008 180718b2006 xxu||||| |||| 00| 0 eng d
100 _aLuhmann, Niklas
245 _aSystem as difference
260 _c2006
300 _ap.37-57.
362 _aJan
650 _aOrganizations
773 _aOrganization
909 _a68695
999 _c68695
_d68695