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China library classification.
中国图书分类法。
youdao
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China is the first one who applied book classification in library catalogue.
中国是世界上最早把分类理论应用于目录制作的国家。
youdao
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China is the first one who applied book classification in library catalogue.
中国是世界上最早把分类理论应用于目录制作的国家。
youdao