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《国际交流:英文版》
>Letter of Thanks——by Mr. Yan Yongliang,headmaster of Yuanlongsi Primary School of Baota District, Yan'an at the Computer-donating Ceremony
Letter of Thanks——by Mr. Yan Yongliang,headmaster of Yuanlongsi Primary School of Baota District, Yan'an at the Computer-donating Ceremony