861 | Add to Reading ListSource URL: www.ag.ndsu.eduLanguage: English - Date: 2010-08-30 12:05:38
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862 | Add to Reading ListSource URL: comm-dev.orgLanguage: English - Date: 2014-03-01 16:29:18
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863 | Add to Reading ListSource URL: www.lpi.usra.eduLanguage: English - Date: 2000-04-20 17:43:50
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864 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 1999-03-24 12:02:47
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865 | Add to Reading ListSource URL: www.wellwater.bse.vt.eduLanguage: English - Date: 2014-05-30 09:29:32
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866 | Add to Reading ListSource URL: www.cleanwateraction.orgLanguage: English - Date: 2013-03-14 14:53:32
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867 | Add to Reading ListSource URL: csrc.nist.govLanguage: English - Date: 2013-03-12 13:31:31
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868 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2004-02-18 13:03:38
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869 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2003-07-01 05:46:20
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870 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2004-02-18 13:40:32
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