Robert Lee Morton, Merle Gray, Elizabeth Springstun & William L. Schaaf.
Making sure of arithmetic, teacher's guide to accompany grade five.
R590538. Making sure of arithmetic, teacher's guide to accompany grade five. By Robert Lee Morton, Merle Gray, Elizabeth Springstun & William L. Schaaf. © 4Feb47; AA44416. Robert Lee Morton & Merle Gray (A); 14Nov74; R590538.
Robert Lee Morton & Merle Gray|A