00412nam a2200133Ia 450000500170000000800410001708200150005810000210007324500720009426000420016650400390020865000160024765000150026320240911061736.0190213s9999    xx            000 0 und d  a519.5bMAS  aMason, Robert D. 0aStatistical techniques in business and economics /cRobert D. Mason  aGeorgetown :bRichard D. Irwin,c1970  aIncludes bibliographies and index.  aMathematics  aStatistics