RUCH, G. M.
Graded arithmetic problem tests. 8th grade problem tests 1-10. By G. M. Ruch & F. B. Knight.
RUCH, G. M. Graded arithmetic problem tests. 8th grade problem tests 1-10. By G. M. Ruch & F. B. Knight. © 18May36; AA205321. Scott, Foresman & Co. (PWH); 8Jan64; R329315.
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