231 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2006-01-20 15:58:22
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232 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-02-01 14:19:38
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233 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2008-01-09 18:06:16
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234 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-07-21 13:38:48
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235 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-07-25 10:30:58
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236 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-10-30 11:22:54
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237 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-09-16 14:19:37
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238 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-10-09 10:55:28
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239 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-12-14 14:51:44
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240 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-01-14 15:31:31
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