Additional Authors: | Rutledge, John Joseph, |
---|---|
Year: | 1930 |
Document Type: | USBM |
Issuing Agency: | U.S. Bureau of Mines, |
SUDOC: | C 22.5:465 |
Series: | Technical paper / United States. Bureau of Mines ; |
Report Number: | 465 |
Subjects: | Coal--Analysis |
Coal--Maryland | |
Link: | https://hdl.handle.net/2027/mdp.39015077559667 |