00445nam a2200145Ia 4500003000600000005001700006008004100023040002500064082001700089100002300106245005800129260003800187300002600225500004800251NORSU20240326005857.0240215s9999    xx            000 0 und d  aNORSU-DumcNORSU-Dum  a372.7/Sw4/c1  aSwenson, Esther J. 0aTeaching Arithmetic to ChildrencBy Esther J. Swenson  bMacMillan Companyc1964aNew York  aix, 482 pages, 26 cm.  aincludes bibliographic references and index