| Author: | Grove, G. W. |
|---|---|
| Year: | 1944 |
| Document Type: | N/A |
| SUDOC: | I 28.27:7279 |
| Series: | Information circular (United States. Bureau of Mines) |
| Report Number: | I. C. 7279 |
| Subjects: | Respirators (Medical equipment) |
| Mine accidents. | |
| Breathing apparatus. | |
| Link: | http://digital.library.unt.edu/ark:/67531/metadc67028/ |