Experience in the organizations of production and labour and of labour productivity in the mining of steeply-inclined seams (30 to 60 degrees) : communication / transmitted by the Government of Czechoslovakia.
1983
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详细记录
符号[E/ECE/]COAL/GE.1/R.49/Add.6
标题Experience in the organizations of production and labour and of labour productivity in the mining of steeply-inclined seams (30 to 60 degrees) : communication / transmitted by the Government of Czechoslovakia.
分发
DER
日期Geneva : UN, 23 Mar. 1983.
描述
18 p. : graphs, tables