H. C. Findley & J. H. Studebaker & F. B. Knight.
Self-help arithmetic workbook 3.
R663389. Self-help arithmetic workbook 3. By H. C. Findley & J. H. Studebaker & F. B. Knight. NM: additions & revisions. © 20May50; AA152995. Scott, Foresman and Company (PWH); 31May77; R663389.
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