431 | Add to Reading ListSource URL: water.usgs.govLanguage: English - Date: 2012-09-13 14:24:25
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432 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-05-23 12:51:54
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433 | Add to Reading ListSource URL: www.cmcmua.comLanguage: English - Date: 2012-04-20 15:52:51
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434 | Add to Reading ListSource URL: www.azdeq.govLanguage: English - Date: 2010-07-16 11:34:37
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435 | Add to Reading ListSource URL: www.usc.eduLanguage: English - Date: 2014-04-25 17:13:56
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436 | Add to Reading ListSource URL: pubs.ext.vt.eduLanguage: English - Date: 2014-09-04 11:51:47
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437 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-01-29 12:00:20
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438 | Add to Reading ListSource URL: water.usgs.govLanguage: English - Date: 2009-06-08 13:41:39
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439 | Add to Reading ListSource URL: water.usgs.govLanguage: English - Date: 2006-03-09 11:58:22
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440 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-04-04 12:13:07
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