| Author: | Fraser, Thomas |
|---|---|
| Year: | 1946 |
| Document Type: | N/A |
| SUDOC: | I 28.7:689 |
| Series: | United States Bureau of Mines Reports |
| Report Number: | Technical Paper 689 |
| Subjects: | Coal -- Analysis. |
| Coal -- Pennsylvania -- Greene County. | |
| Link: | http://digital.library.unt.edu/ark:/67531/metadc66468/ |