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100|  |□a20001220d1985    em y0chiy0121    ea
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200|1 |□a小学科技活动参考资料□h第三册□Axiao xue ke-
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   |  |重庆市教育局，重庆市科学技术协会编
210|  |□a重庆□c重庆出版社□d1985
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300|  |□a供五、六年级教师及家长使用
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690|  |□aG623.6
711|02|□a重庆市教育局□4编□Achong qing shi jiao yu ju
711|02|□a重庆市科学技术协会□4编□Achong qing shi-
   |  | ke xue ji shu xie hui
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