211 | Add to Reading ListSource URL: elpaso.ttuhsc.eduLanguage: English - Date: 2014-07-29 12:45:14
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212 | Add to Reading ListSource URL: www.oxy.comLanguage: English - Date: 2014-06-04 14:01:51
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213 | Add to Reading ListSource URL: www.oxy.comLanguage: English - Date: 2014-06-04 14:01:58
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214 | Add to Reading ListSource URL: phys.orgLanguage: English - Date: 2014-10-27 19:29:22
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215 | Add to Reading ListSource URL: www.uky.eduLanguage: English - Date: 2008-12-15 20:28:01
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216 | Add to Reading ListSource URL: epa.govLanguage: English - Date: 2010-04-01 17:10:55
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217 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2012-06-22 15:15:36
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218 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2012-03-22 09:44:24
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219 | Add to Reading ListSource URL: phys.orgLanguage: English - Date: 2014-10-29 00:18:44
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220 | Add to Reading ListSource URL: www.geology.arkansas.govLanguage: English - Date: 2014-01-10 10:59:02
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