文献分类 meaning in English

document classification

A study on classification of document in food industry
关于食品工业文献分类的研究下
Research on the classification for electronic technique
关于电工技术文献分类的研究五
A study on classificatioin of decument in instruments and merers
仪表文献分类的研究下
On the quality of document classification staffs in 21st century
论新时期文献分类人员的素养
The present situation and the development of literature classification
文献分类工作的现状与发展

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