00537nam a2200145Ia 450000100060000000300050000600500170001100800410002811000920006924500270016126000540018830000110024249000940025365000440034754259BIBL20160527185743.0920331|1970||||ilu|||||||||||00010|eng|d20aNational society for the study of education. Committee on Mathematics Education.2Local10aMathematics education.0 aChicago, Ill.bUniversity of Chicago Pressc1970.  a467 p.0 aYearbook of the National Society for the Study of Education [new ser.] 57th, pt. 22Local 0aMathematicsxStudy and teaching.2Local