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Mining laws of Portugal
| Author: | Frey, John W. |
|---|---|
| Year: | 1929 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of Commerce, Bureau of Mines, |
| SUDOC: | C 22.11:6197 |
| Series: | Information circular / United States Department of Commerce, Bureau of Mines ; |
| Report Number: | 6197 |
| Subject: | Mining law--Portugal |
| Link: | https://hdl.handle.net/2027/mdp.39015077584210 |
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