Final report Regional Seminar on School Science Equipment, New Delhi, 11-20 December 1972 convened by Unesco in co-peration with the Government of India and UNICEF.
| 企业作者: | , , , |
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| 格式: | 图书 |
| 语言: | English |
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Bangkok
Unesco Regional Officef or Education in Asia
c1973.
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| 主题: |