241 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2009-06-23 08:32:09
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242 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2008-02-01 09:22:59
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243 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1998-02-26 07:42:54
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244 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-04-04 12:13:10
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245 | Add to Reading ListSource URL: www.nr.gov.nl.caLanguage: English - Date: 2014-02-28 09:32:24
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246 | Add to Reading ListSource URL: www.okladot.state.ok.usLanguage: English - Date: 2012-07-26 17:28:48
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247 | Add to Reading ListSource URL: www.fs.fed.usLanguage: English - Date: 2012-09-07 17:31:07
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248 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1997-03-12 07:46:11
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249 | Add to Reading ListSource URL: speclab.cr.usgs.govLanguage: English - Date: 2006-10-03 18:11:47
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250 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1998-02-26 08:36:17
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