661 | Add to Reading ListSource URL: fl.water.usgs.govLanguage: English - Date: 2004-06-22 08:52:35
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662 | Add to Reading ListSource URL: www.sonic.netLanguage: English - Date: 2009-06-30 20:19:34
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663 | Add to Reading ListSource URL: crrc.unh.eduLanguage: English - Date: 2014-03-18 16:38:48
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664 | Add to Reading ListSource URL: lancaster.unl.eduLanguage: English - Date: 2012-07-26 18:16:58
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665 | Add to Reading ListSource URL: water.epa.govLanguage: English - Date: 2011-09-10 00:59:54
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666 | Add to Reading ListSource URL: water.usgs.govLanguage: English - Date: 2002-01-09 12:03:41
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667 | Add to Reading ListSource URL: narf.orgLanguage: English - Date: 2013-01-15 12:38:32
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668 | Add to Reading ListSource URL: www.gwpc.orgLanguage: English - Date: 2012-12-06 10:59:28
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669 | Add to Reading ListSource URL: ase.tufts.eduLanguage: English - Date: 2009-08-21 10:55:37
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670 | Add to Reading ListSource URL: www.michigan.govLanguage: English - Date: 2012-12-07 11:44:06
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