Author: | Tyler, Paul M. |
---|---|
Year: | 1940 |
Document Type: | USBI |
Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
SUDOC: | I 28.27:7118 |
Series: | Information Circular / Bureau of Mines ; |
Report Number: | 7118 |
Subject: | Mineral industries |
Link: | https://hdl.handle.net/2027/mdp.39015078534107 |