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| 245 | 0 | _aPopularization of science and technology: Delivery systems for out-of-school science activities including regional science olympiad | |
| 245 | 0 | _cUnesco | |
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_aBangkok, Thailand _bUNESCO Regional Office for Education in Asia and the Pacific _c1991 |
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| 546 | _aAcc. No. 083811 is MACESE book | ||
| 650 | _aScience education | ||
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