000 00315nam a2200133Ia 4500
008 221102s9999 xx 000 0 und d
082 _a658.4 SPE
100 _aSpencer, Milton H
245 0 _aManagerial economics
250 _a3rd ed.
260 _bRichard D Irwin
_aIllions
_c1968
300 _a515 p.
942 _cBK
999 _c443
_d443