Wraigth, E. A.
'Influence of heath in Cyniding gold Ores'.
- Londres-XXK : The Institution of Mining and Metallurgy, 1916.
- p. 3-9
- Irregular
- No. 136(Jan.1916)
- Bulletin of the Institution of Mining and Metallurgy, ; No. 136 .
- Reino Unido. The Institution of Mining and Metallurgy,. .
Inglés.