191 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-09-10 12:34:42
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192 | Add to Reading ListSource URL: www.ctf-fce.caLanguage: English - Date: 2014-02-06 14:15:58
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193 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-04-04 12:13:05
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194 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2014-07-24 15:46:55
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195 | Add to Reading ListSource URL: www.scotlib.orgLanguage: English - Date: 2014-05-31 16:00:49
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196 | Add to Reading ListSource URL: scifun.chem.wisc.eduLanguage: English - Date: 2013-12-03 11:49:09
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197 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-04-04 12:13:05
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198 | Add to Reading ListSource URL: www.usp.orgLanguage: English - Date: 2013-12-27 09:41:45
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199 | Add to Reading ListSource URL: files.hawaii.govLanguage: English - Date: 2013-05-30 01:00:11
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200 | Add to Reading ListSource URL: www.nsbf.nasa.govLanguage: English - Date: 2012-07-30 11:54:35
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