00634cam a2200217 i 45000010008000000030008000080050017000160080041000330100017000740200015000910400027001060500016001330820013001492450082001622600048002443000029002925000020003216500016003416500035003577000024003922688267BD-DhUL20140829114124.0750224s1976    nyua          001 0 eng    a   75005767   a0061644021  aDLCcDLCdDLCdBD-DhUL10aQA107b.A7300a513bBEA00aArithmetic :bdeveloping concepts and skills /cJ. William Beck ... [et al.].  aNew York :bHarper's College Press,cc1976.  a711 p. :bill. ;c28 cm.  aIncludes index. 0aArithmetic. 0aArithmeticxRemedial teaching.1 aBeck, John William.