Parallelism of eastern and western interior coal fields.
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| Title: | Parallelism of eastern and western interior coal fields. |
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| Authors: | Keyes, C. |
| Source: | Coal Age (00099910); November 24 1917, Vol. 12, p886-887, 2p |
| Database: | Applied Science & Technology Source |
| ISSN: | 00099910 |
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