Increased underground extraction of coal
edited by C. J. Fauconnier and R. W. O. Kersten ; production editor: E. H. Wainwright
Bok Språk ikke angitt 1982
| Utgitt | Johannesburg : South African Institute of Mining and Metallurgy , 1982
|
|---|---|
| Omfang | viii, 345 s. : ill.
|
| Emner | |
| Dewey | |
| ISBN | 062006028X
|
