A half century of significant developments in the teaching of science and mathematics during the first half of the twentieth century, and an account of the development of Central Association of Science and Matehmatics Teachers and the part it has played in these developments.
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| 格式: | 圖書 |
| 語言: | English |
| 出版: |
Oak Park, Ill.
s.n.
c1950.
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