档案材料 meaning in English

documentary materials

We have some complete files .
我们还有一些详细的档案材料。
I saw some documentary evidence before i left moscow .
我离开莫斯科前看到过一些档案材料。
You disclosed your documentary evidence to american newspapermen .
你对美国新闻界人士透露了你的档案材料。
Environmental conditions for exhibiting library and archival materials
图书馆和档案材料展示的环境条件
What steps should a historian take in the critical evaluation of archival sources
历史学家在对档案材料进行评估时应采取哪些步骤？

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