Author: | Babcock, Clarence O. |
---|---|
Year: | 1970 |
Document Type: | BMRA |
Issuing Agency: | U.S. Dept. of Interior, Bureau of Mines, |
SUDOC: | I 28.23:7436 |
Series: | Report of investigations / United States Department of the Interior, Bureau of Mines ; |
Report Number: | 7436 |
Subject: | Mining engineering |
Link: | https://hdl.handle.net/2027/mdp.39015078533331 |