Exploration by geophysical methods, extraction and transport of hard rock inclusions during overburden removal : replies to the questionnaire / transmitted by the Government of the Union of Soviet Socialist Republics.
1984
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详细记录
符号[E/ECE/]COAL/GE.5/R.31/Add.4
标题Exploration by geophysical methods, extraction and transport of hard rock inclusions during overburden removal : replies to the questionnaire / transmitted by the Government of the Union of Soviet Socialist Republics.
作者USSR
日期Geneva : UN, 29 Aug. 1984.
描述
8 p.