91 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1998-10-16 10:46:28
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92 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-08-23 10:55:55
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93 | Add to Reading ListSource URL: digital.library.okstate.eduLanguage: English - Date: 2009-01-09 16:56:15
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94 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-12-17 17:37:31
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95 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2009-08-11 11:12:43
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96 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-03-14 16:27:45
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97 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-12-13 11:39:17
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98 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-02-15 10:42:55
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99 | Add to Reading ListSource URL: repository.azgs.az.govLanguage: English - Date: 2013-07-13 18:26:34
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100 | Add to Reading ListSource URL: www.stateplanning.delaware.govLanguage: English - Date: 2013-06-26 09:08:19
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