Author: | Hatmaker, Paul. |
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Year: | 1931 |
Document Type: | USBI |
Issuing Agency: | U.S. Bureau of Mines, |
SUDOC: | C 22.11:6391 |
Series: | Information circular / Bureau of Mines ; |
Report Number: | 6391 |
Subjects: | Diatomaceous earth |
Diatoms | |
Links: | https://hdl.handle.net/2027/mdp.39015074127310 |
https://hdl.handle.net/2027/mdp.39015095085315 |