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Iceland spar and optical fluorite
| Author: | Hughes, H. Herbert |
|---|---|
| Year: | 1941 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:6468R |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 6468R |
| Subjects: | Iceland spar |
| Fluorspar | |
| Links: | https://hdl.handle.net/2027/mdp.39015095085927 |
| https://hdl.handle.net/2027/mdp.39015074127484 |
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