Clarifying Coals
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References
1
Great Britain Royal Commission on Coal Supplies, “First report of the Royal Commission on Coal Supplies” (London, 1903).
2
Great Britain Royal Commission on Coal Supplies, “Final report of the Royal Commission on Coal Supplies” (London, 1905).
3
Kerr G. L., Practical Coal-Mining (C. Griffin, London, 1922).
4
Fritzsche C. H., Potts E. L. J., Horizon Mining (George Allen & Unwin, London, 1954).
5
Farmer I. W., Coal Mine Structures (Chapman & Hall, London, 1985).
6
Forti A., Stassens J.-J., Objectif Mine, Photographies de Désiré Deleuze (Editions du Perron, Alleur, Belgium, 1996).
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Science
Volume 325 | Issue 5942
14 August 2009
14 August 2009
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Copyright © 2009, American Association for the Advancement of Science.
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Published in print: 14 August 2009
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