00325    a2200109   450000500170000008200160001710000150003324500470004826000390009530000630013470000180019720250516090117.0  a658.403 RIV  aRIVETT, P.  aA Manager's Guide to Operational Research.  aLondon,bJohn Wiley & Sons,c1963.  ax, 107p.: ill.;bBibliographical References & Indexc22cm.  aACKOFF, R. L.