31 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1996-07-15 09:29:54
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32 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-03-21 11:02:13
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33 | Add to Reading ListSource URL: www.nesc.wvu.eduLanguage: English - Date: 2008-12-29 10:46:17
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34 | Add to Reading ListSource URL: www.water-research.netLanguage: English - Date: 2014-06-26 15:28:42
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35 | Add to Reading ListSource URL: www.water-research.netLanguage: English - Date: 2014-06-26 15:30:13
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36 | Add to Reading ListSource URL: www.migeweb.orgLanguage: English - Date: 2012-01-25 16:59:46
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37 | Add to Reading ListSource URL: www.ipswichutilities.orgLanguage: English - Date: 2014-06-16 14:48:04
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38 | Add to Reading ListSource URL: www.visitdorking.comLanguage: English - Date: 2011-01-17 04:17:05
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39 | Add to Reading ListSource URL: www.visitdorking.comLanguage: English - Date: 2012-09-03 10:29:42
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40 | Add to Reading ListSource URL: www.kentwildlifetrust.org.ukLanguage: English - Date: 2012-03-14 09:47:46
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