Periodical has diversified subjects and widespread content. Classif-ying rules of common books do not completely fit for periodical.
期刊内容广泛，主题多样，难于适用普通图书的分类标准与规则。
Periodical has diversified subjects and widespread content. Classif-ying rules of common books do not completely fit for periodical.
期刊内容广泛，主题多样，难于适用普通图书的分类标准与规则。
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