The Origin of Coal
| Author: | White, David |
|---|---|
| Year: | 1913 |
| Document Type: | N/A |
| Issuing Agency: | United States. Bureau of Mines. |
| Series: | United States Bureau of Mines Reports |
| Report Number: | Bulletin 38 |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc12254/ |