| Author: | Rice, George S. |
|---|---|
| Additional Authors: | Fieldner, Arno Carl,, Osgood, Fred D. |
| Year: | 1921 |
| Document Type: | USBM |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.7:269 |
| Series: | Technical paper / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 269 |
| Subjects: | Coal--Analysis |
| Coal mines and mining--Iowa | |
| Link: | https://hdl.handle.net/2027/mdp.39015095082031 |