Author: | Hatmaker, Paul. |
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Year: | 1932 |
Document Type: | USBI |
Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
Series: | Information Circular / Bureau of Mines ; |
Report Number: | 6560 |
Subject: | Pumice |
Link: | https://hdl.handle.net/2027/mdp.39015077561705 |