381 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-09-14 10:15:49
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382 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-09-14 10:46:40
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383 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-08-15 09:00:54
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384 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-08-15 08:58:22
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385 | Add to Reading ListSource URL: nebraska.eduLanguage: English - Date: 2014-05-01 18:40:04
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386 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-08-15 08:55:46
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387 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-04-17 08:52:10
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388 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-08-31 10:59:48
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389 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-08-31 10:41:05
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390 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-05-07 10:09:42
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