00449nam a2200169Ia 4500008004100000040000600041041001200047082001000059082001100069100002100080245002900101245002100130260001700151260000900168501002500177650007700202141004s9999    xx            000 0 und d  ca  aEnglish  a302.2  bLUH/EC  aNiklas   Luhmann  aecological communication  cNiklas   Luhmann  bpolity press  c1989  a1A4                   aComplexity and evolution, Resonance, binary coding, Ecological knowledge