DISCUSSION. COAL BREAKING BY MACHINERY.
| Autor: | JOHNSON, H, MALLET, R, PHIPPS, G H, JONES, G, SMYTH, W, SIEMENS, C W, CHUBB, C J, CORE, J, WILLIAMS, R P, LUPTON, A, WOODHOUSE, J T, BIDDER, S P, STEEL, T D |
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| Zdroj: | Minutes of the Proceedings; Jan1869, Vol. 28 Issue 1869, p122-156, 35p |
| Databáze: | Complementary Index |
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