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Search keyword：(Author: #Ruch G. M.)
Specimen set of Stanford achievement tests / [by Truman L.. Kelley, Giles M. Ruch and Lewis M. Terman]
,,. - Yonkers-on-Hudson, N. Y. : World Book , c1940
Study arithmetics / by F.B. Knight, J.W. Studebaker, and G.M. Ruch
book 4 - book 8. - New ed. - Chicago : Scott, Foresman , c1943-