W. C. Findley, J. W. Studebaker & F. E. Knight. 1948 ed.
Understanding numbers; teacher's guidebook. (The Number stories program)
R608869. Understanding numbers; teacher's guidebook. By W. C. Findley, J. W. Studebaker & F. E. Knight. 1948 ed. (The Number stories program) © 15Jun48; AA86567. Scott, Foresman and Company (PWH); 3Jul75; R608869.
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