000 002910000a22001330004500
245 _aAn introduction to cybernetics
100 _aAshby, W.R.
260 _aLondon
_bChapman & Hall
_c1964
300 _a295 p.
500 _adiagrams
080 _a007
_bA8
041 _aEN
942 _cBK
999 _c94839
_d94839