211 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-05-23 12:51:54
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212 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1997-08-25 11:23:59
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213 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-09-16 14:19:37
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214 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-01-24 14:36:55
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215 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-01-29 12:00:20
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216 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-11-04 15:18:43
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217 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-03-26 14:03:32
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218 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-07-11 17:09:42
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219 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-04-04 12:13:07
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220 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-07-27 14:20:53
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