RUCH, G.M.
Graded mathematics problem tests. Ninth grade problems test 1-10. By G.M. Ruch & F.B. Knight.
RUCH, G.M. Graded mathematics problem tests. Ninth grade problems test 1-10. By G.M. Ruch & F.B. Knight. © 13Jan38; AA254530. Scott, Foresman & Co. (PWH); 23Dec65; R377270.
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