| Author: | Harrington, D. | 
|---|---|
| Year: | 1938 | 
| Document Type: | USBI | 
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, | 
| SUDOC: | I 28.27:6994 | 
| Series: | Information circular / Bureau of Mines ; | 
| Report Number: | 6994 | 
| Subjects: | Occupational diseases | 
| Dust control | |
| Industrial hygiene | |
| Silicosis | |
| Lungs--Dust diseases | |
| Link: | https://hdl.handle.net/2027/mdp.39015077575895 |