phosphorite: References & Edit History
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Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Invalidated site: US Geological Survey. | Jan 26, 2020 | ||
| Removed table. | Aug 15, 2018 | ||
| Add new Web site: Indianetzone - Indian Phosphorite Mines. | Dec 10, 2010 | ||
| Article revised and updated. | Dec 08, 2006 | ||
| Article added to new online database. | Jul 20, 1998 |
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