31 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2011-11-25 10:29:58
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32 | Add to Reading ListSource URL: nadp.sws.uiuc.eduLanguage: English - Date: 2012-11-14 15:14:15
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33 | Add to Reading ListSource URL: www.dnr.state.md.usLanguage: English - Date: 2014-07-29 13:18:35
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34 | Add to Reading ListSource URL: ny.water.usgs.govLanguage: English - Date: 2013-11-14 10:58:54
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35 | Add to Reading ListSource URL: des.nh.govLanguage: English - Date: 2013-03-10 05:00:00
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36 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2009-07-17 18:42:55
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37 | Add to Reading ListSource URL: water.usgs.govLanguage: English - Date: 2001-07-09 17:44:09
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38 | Add to Reading ListSource URL: water.usgs.govLanguage: English - Date: 2012-09-13 14:24:25
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39 | Add to Reading ListSource URL: water.usgs.govLanguage: English - Date: 2009-06-08 13:41:39
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40 | Add to Reading ListSource URL: water.usgs.govLanguage: English - Date: 2006-03-09 11:58:22
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