In this article, non-document method refers to the method of obtaining intelligence through direct ways such as no-the-spot investigation rather than document.

竞争情报获取的非文献方法是指不通过公开的文献信息源，而是通过实地调查等更为直接的方法去获取情报。

youdao

In this article, non-document method refers to the method of obtaining intelligence through direct ways such as no-the-spot investigation rather than document.

竞争情报获取的非文献方法是指不通过公开的文献信息源，而是通过实地调查等更为直接的方法去获取情报。

youdao