RUCH, G.M.
Self-help arithmetic work-book. Grade 4. By G.M. Ruch, F.B. Knight & J.W. Studebaker.
RUCH, G.M. Self-help arithmetic work-book. Grade 4. By G.M. Ruch, F.B. Knight & J.W. Studebaker. © 10Feb39; AA291567. Scott, Foresman & Co. (PWH); 3Jan67; R400334.
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