111 | Add to Reading ListSource URL: www.usgs.govLanguage: English - Date: 2009-03-06 15:38:16
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112 | Add to Reading ListSource URL: www.usgs.govLanguage: English - Date: 2009-06-03 18:06:05
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113 | Add to Reading ListSource URL: www.petroleumnews.comLanguage: English - Date: 2014-11-28 09:44:51
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114 | Add to Reading ListSource URL: www.platts.comLanguage: English - Date: 2014-05-15 07:20:18
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115 | Add to Reading ListSource URL: www.dmr.nd.govLanguage: English - Date: 2011-12-12 09:18:54
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116 | Add to Reading ListSource URL: dnr.mo.govLanguage: English - Date: 2014-04-02 18:21:16
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117 | Add to Reading ListSource URL: bogc.dnrc.mt.govLanguage: English - Date: 2014-09-22 15:21:56
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118 | Add to Reading ListSource URL: www.lightsource.caLanguage: English - Date: 2013-08-07 18:36:12
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119 | Add to Reading ListSource URL: www.dmr.nd.govLanguage: English - Date: 2012-05-25 11:56:12
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120 | Add to Reading ListSource URL: www.dmr.nd.govLanguage: English - Date: 2011-07-12 15:41:36
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