✦ LIBER ✦
Underground lighting in the gold mining industry : Van Graan, C.H. et alJournal of the South African Institute of Mining and Metallurgy, 1971, 71.6, 122–129; abstr. in Abstracts A: Technical Coal Press
- Publisher
- Elsevier Science
- Year
- 1972
- Tongue
- English
- Weight
- 104 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0003-6870
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