The coal resources of the world ; an inquiry made upon the initiative of the Executive committee of the XII International geological congress, Canada, 1913, with the assistance of geological surveys and mining geololgists of different countries /
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| Andre forfattere: | , , |
| Format: | Conference Proceeding Bog |
| Sprog: | English |
| Udgivet: | Toronto, Can : Morang & co., limited, [1913], ©1913. |
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