Coal-face operations at longwall faces with mechanized and automated systems : consolidated report / transmitted by the Government of the Union of Soviet Socialist Republics.
1984
شكل
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رمز / رقم الاستدعاء
[E/ECE/]COAL/GE.4/R.25
العنوان
Coal-face operations at longwall faces with mechanized and automated systems : consolidated report / transmitted by the Government of the Union of Soviet Socialist Republics.
المؤلفون
تاريخ
Geneva : UN, 30 May 1984.
الوصف
6 p.