261 | Add to Reading ListSource URL: www.gov.ukLanguage: English - Date: 2014-07-11 09:05:14
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262 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-06-06 13:33:21
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263 | Add to Reading ListSource URL: www.nature.comLanguage: English - Date: 2010-02-23 05:45:03
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264 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2001-02-01 13:01:54
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265 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-06-18 11:36:25
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266 | Add to Reading ListSource URL: www.cbsa-asfc.gc.caLanguage: English - Date: 2013-01-15 11:16:00
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267 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-04-12 14:16:59
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268 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2014-04-04 11:21:53
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269 | Add to Reading ListSource URL: scap.nist.govLanguage: English - Date: 2013-12-31 15:31:56
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270 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-03-01 14:26:38
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