241 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-01-31 09:57:05
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242 | Add to Reading ListSource URL: www.ima-europe.euLanguage: English - Date: 2014-07-23 04:10:36
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243 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2005-10-31 15:09:29
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244 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2001-08-09 10:41:43
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245 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2001-08-09 10:41:25
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246 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2014-03-11 13:38:48
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247 | Add to Reading ListSource URL: digital.library.okstate.eduLanguage: English - Date: 2009-01-09 16:58:09
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248 | Add to Reading ListSource URL: media.wiley.comLanguage: English - Date: 2013-08-31 16:13:50
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249 | Add to Reading ListSource URL: www.anr.state.vt.usLanguage: English - Date: 2009-12-15 15:48:58
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250 | Add to Reading ListSource URL: www.msha.govLanguage: English - Date: 2014-07-18 14:24:02
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