Author: | Greenwald, H. P. |
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Additional Authors: | Rice, G. S., Avins, S. |
Year: | 1933 |
Document Type: | USBM |
Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
SUDOC: | C 22.5:527 |
Series: | Technical paper / United States Department of the Interior, Bureau of Mines ; |
Report Number: | 527 |
Subject: | Coal mines and mining--Pennsylvania--Pittsburgh |
Link: | https://hdl.handle.net/2027/mdp.39015077559337 |