231 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-01-31 09:52:26
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232 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1999-06-08 10:51:31
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233 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-02-22 08:10:58
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234 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-11-14 11:27:27
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235 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1999-06-08 10:51:30
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236 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-01-24 11:32:25
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237 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2001-05-24 13:53:31
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238 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2003-02-11 10:20:52
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239 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-03-24 10:03:24
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240 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1999-06-08 10:51:32
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