J. W. Studebaker, W. C. Findley, F. B. Knight & G. M. Ruch.
Study arithmetic. Book 4.
R604573. Study arithmetic. Book 4. By J. W. Studebaker, W. C. Findley, F. B. Knight & G. M. Ruch. NM: revisions. © 7Apr48; A21793. Scott, Foresman and Company (PWH); 5May75; R604573.
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