71 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1999-02-05 10:07:30
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72 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-03-30 09:49:42
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73 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1998-02-26 08:36:17
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74 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2005-12-01 08:08:52
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75 | Add to Reading ListSource URL: www.gbuapcd.orgLanguage: English - Date: 2006-11-16 11:48:33
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76 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1997-03-07 09:15:59
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77 | Add to Reading ListSource URL: www.dot.ca.govLanguage: English - Date: 2014-04-23 16:14:28
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78 | Add to Reading ListSource URL: www.fs.usda.govLanguage: English - Date: 2014-06-24 14:39:57
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79 | Add to Reading ListSource URL: www.dcnr.nv.govLanguage: English - Date: 2010-08-06 15:46:56
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80 | Add to Reading ListSource URL: www.lppsr.orgLanguage: English - Date: 2009-01-13 17:00:12
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