00463nam a2200157Ia 450000500170000000800460001703700120006304000200007504100130009508400220010824500500013024500480018026000490022830000130027754600150029020250508151915.0008  250505s9999    xx            000 0 eng d  aTextual  aFEDLbengcFEDL  aeng2eng  a512.07, NATqFEDL 4aThe seventh yearbook: The teaching of algebra 0cNational Council of Teachers of Mathematics  aNew York, USAbBureau of Publications c1932  aix,179p.  aWeeded out