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Google圖書搜尋
One Hundred Fifty Years of Arithmetic Textbooks
Henry Lester Smith
Merrill Thomas Eaton
Kathleen Dugdale
出版
Bureau of Cooperative Research and Field Service, Indiana University
, 1945
URL
http://books.google.com.hk/books?id=sXpfc_p1oLgC&hl=&source=gbs_api