在总结著录信息源的产生、特点及作用的同时，重点论述取消主要信息源的概念及有关规定的理由。

Discusses the origin, features and functions of the source of information in description and studies the reasons for cancelling the chief source of information.

youdao

在总结著录信息源的产生、特点及作用的同时，重点论述取消主要信息源的概念及有关规定的理由。

Discusses the origin, features and functions of the source of information in description and studies the reasons for cancelling the chief source of information.

youdao