00287    a2200097   450000500170000008200200001710000170003724500560005426000490011030000300015920250526074421.0  aLECT 513.93 PAR  aPARKS, W. A.  aExcices in Commercial Arithmetic: Elementary Course  aLondon,bCassell and Company Limited,c1961.  a72p.: ill.; table.c18cm.