| Author: | Kinney, S. P. |
|---|---|
| Year: | 1923 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| Series: | Report of investigations / United States. Bureau of Mines ; |
| Report Number: | 2494 |
| Subjects: | Air--Pollution |
| Automobiles--Motors--Exhaust gas | |
| Railroad tunnels--Environmental aspects--United States | |
| Link: | https://hdl.handle.net/2027/mdp.39015086546358 |