| Author: | Colby, Shirley F. | 
|---|---|
| Year: | 1941 | 
| Document Type: | USBI | 
| Issuing Agency: | U.S. Dept of the Interior, Bureau of Mines, | 
| SUDOC: | I 28.27:7157 | 
| Series: | Information circular / Bureau of Mines ; | 
| Report Number: | 7157 | 
| Subjects: | Building materials | 
| Building materials industry | |
| Link: | https://hdl.handle.net/2027/mdp.39015078533828 |