Drivage, development and support of roadways and faces in deep mines, 1,000 metres and over, and consequently in more difficult mining, geological and atmospheric conditions / transmitted by the Government of the Ukrainian Soviet Socialist Republic.
1982
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详细记录
符号
[E/ECE/]COAL/GE.4/R.19/Add.5
标题
Drivage, development and support of roadways and faces in deep mines, 1,000 metres and over, and consequently in more difficult mining, geological and atmospheric conditions / transmitted by the Government of the Ukrainian Soviet Socialist Republic.
日期
Geneva : UN, 17 Mar. 1982.
描述
6 p.