Перегляд Volume 10, Issue 4 по темі
Зараз показуються 72-81 з 81
| Тема |
|---|
| steep excavation layer [1] |
| stopes [1] |
| subsidence of the land surface [1] |
| sulfur content [1] |
| sustainability [1] |
| technogenic deposits [1] |
| technology [1] |
| tool [1] |
| tungsten [1] |
| underground coal combustion [1] |