| Author: | Stone, Ralph W. |
|---|---|
| Year: | 1917 |
| Document Type: | N/A |
| SUDOC: | I 28.7:155 |
| Series: | United States Bureau of Mines Reports |
| Report Number: | Technical Paper 155, Mineral Technology 19 |
| Subject: | Gypsum. |
| Link: | http://digital.library.unt.edu/ark:/67531/metadc66393/ |