00407nam a22001337a 4500003000400000005001700004008004100021020001500062040000800077100002000085245009300105250002800198260004700226OSt20160517092510.0160517b        xxu||||| |||| 00| 0 eng d  a0060976195  cN/A  aFlansburg Scott  aMath magic bThe human calculator shows how to master everyday maths problems in seconds  a1st harper Perennial ed  aNew YorkbHarper Perennial Publisherc1994