31 | Add to Reading ListSource URL: www.odplegacy.orgLanguage: English - Date: 2014-09-04 08:44:56
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32 | Add to Reading ListSource URL: easd.geosc.uh.eduLanguage: English - Date: 2013-08-28 10:50:20
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33 | Add to Reading ListSource URL: www.tceq.texas.govLanguage: English - Date: 2011-08-09 16:43:19
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34 | Add to Reading ListSource URL: cbth.uh.eduLanguage: English - Date: 2012-07-30 16:36:18
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35 | Add to Reading ListSource URL: www.indiana.eduLanguage: English - Date: 2006-06-06 18:18:28
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36 | Add to Reading ListSource URL: www.lgs.lsu.eduLanguage: English - Date: 2007-07-31 16:54:14
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37 | Add to Reading ListSource URL: irnr.tamu.eduLanguage: English - Date: 2013-06-07 14:07:23
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38 | Add to Reading ListSource URL: www.velj.orgLanguage: English - Date: 2016-04-18 09:59:35
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39 | Add to Reading ListSource URL: tx.usgs.govLanguage: English - Date: 2015-11-30 07:55:37
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40 | Add to Reading ListSource URL: tx.usgs.govLanguage: English - Date: 2015-11-30 07:52:47
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