261 | Add to Reading ListSource URL: www.inepo.comLanguage: English - Date: 2014-07-05 02:15:05
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262 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-11-15 11:50:25
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263 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1999-05-12 14:52:45
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264 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1997-03-19 11:43:07
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265 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-04-04 12:13:05
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266 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2012-12-14 14:11:31
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267 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2005-01-12 14:16:14
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268 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-05-22 12:15:19
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269 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-02-13 13:14:41
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270 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-11-16 07:32:00
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