81 | Add to Reading ListSource URL: www.dakotagas.comLanguage: English - Date: 2014-04-18 02:12:03
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82 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-01-19 08:56:22
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83 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-04-26 09:26:08
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84 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-08-15 09:06:36
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85 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-08-07 15:13:48
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86 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-08-10 10:34:15
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87 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-03-07 16:06:20
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88 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-11-06 11:03:49
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89 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-09-14 12:21:13
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90 | Add to Reading ListSource URL: www.ncbi.nlm.nih.govLanguage: English |
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