| Author: | Ashley, George H. |
|---|---|
| Additional Authors: | Toenges, Albert L., Cooper, H. M., Abernethy, R. F., Tarpley, E. C., McElroy, G. E., Snyder, N. H., Siclen, M. Van, Buch, J. W. |
| Year: | 1944 |
| Document Type: | N/A |
| SUDOC: | I 28.7:659 |
| Series: | Technical paper (United States. Bureau of Mines) |
| Report Number: | Technical Paper 659 |
| Subject: | Anthracite coal -- Pennsylvania. |
| Link: | http://digital.library.unt.edu/ark:/67531/metadc66459/ |