000 003240000a22001450004500
060 _a100
082 _a513. 024 62 CAS
100 _aCastle, Frank
245 _aWorkshop arithmetic
260 _aLondon, Mac Millan Company
260 _c1954
300 _a187
650 _aFractions/decimals/averages
942 _cBK
999 _c221943
_d221943