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The Bureau of Mines Minerals Availability System and Resource classification manual,
| Year: | 1974 |
|---|---|
| Document Type: | USBI |
| SUDOC: | I 28.27:8654 |
| Series: | United States. Bureau of Mines. Information circular, |
| Report Number: | 8654. |
| Subject: | Mines and mineral resources--United States--Inventories |
| Link: | https://hdl.handle.net/2027/mdp.39015078463364 |
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