000 00297nam a2200121Ia 4500
008 190710s9999 xx 000 0 und d
082 _a507.2 AC58
100 _aAckoff, Russell L
245 0 _aScientific Method
260 _aLondon
_bJohn Wiley & Sons, Inc
_c1962
300 _axii,464
942 _cBK
999 _c8982
_d8982