Improvement of reliability of opencast mining techniques in difficult geological, mining and climatic conditions / transmitted by the Government of Hungary.
1984
تفصيلات التسجيلة (السجل)
رمز / رقم الاستدعاء[E/ECE/]COAL/GE.4/R.20/Add.4
العنوانImprovement of reliability of opencast mining techniques in difficult geological, mining and climatic conditions / transmitted by the Government of Hungary.
المؤلفونHungary
تاريخGeneva : UN, 10 Jan. 1984.
الوصف
5 p.