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Two Studies in Education. The Relation of Accuracy to Speed in Addition. (By H.L. Smith and M.T. Eaton.) A Study of Bilateral Transfer. (By M.T. Eaton.).

Henry Lester SMITH (and EATON (Merrill Thomas))

出版	1938
URL	http://books.google.com.hk/books?id=5X5KjgEACAAJ&hl=&source=gbs_api