000 00283nam a2200121Ia 4500
001 4890
008 170722s9999 xx 000 0 und d
100 _aAshby, W. Ross
245 _aIntroduction to cybernetics. /
260 _c1956.
653 _aCybernetics,generalia
942 _cGEN
999 _c64521
_d64521