LEADER 00822nam0 2200241 450 001 000017855 005 20081022103751.0 100 $a20081020d1952----km-y0itay50------ba 101 0 $aeng 102 $aUS 105 $aa-------001yy 200 1 $aCybernetics$ecircular causal and feedback mechanisms in biological and social systems$fedited by Heinz Von Foerster$etransactions of the 8th Conference, March 15-16, 1951, New York (N.Y.) 210 $aNew York$cJosiah Macy Jr. Foundation$d1952 215 $aXX, 240 p.$cill.$d24 cm 500 10$aCybernetics$956625 610 1 $aCibernetica 676 $a001.53$v19 702 1$aFoerster,$bHeinz : Von 801 0$aIT$bUNIPARTHENOPE$c20081020$gRICA$2UNIMARC 912 $a000017855 951 $a001.53/105$b11744$cNAVA1 996 $aCybernetics$956625 997 $aUNIPARTHENOPE