Improvement of reliability of opencast mining techniques in difficult geological, mining and climatic conditions / transmitted by the Government of Hungary.
1984
Полное описание
Условное обозначение[E/ECE/]COAL/GE.4/R.20/Add.4
ЗаглавиеImprovement of reliability of opencast mining techniques in difficult geological, mining and climatic conditions / transmitted by the Government of Hungary.
АвторыHungary
ДатаGeneva : UN, 10 Jan. 1984.
Описание
5 p.