81 | Add to Reading ListSource URL: www.arl.noaa.govLanguage: English - Date: 2008-09-10 17:27:15
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82 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-11-16 07:32:00
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83 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-08-15 09:13:46
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84 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-04-30 13:55:52
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85 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2001-03-22 14:50:18
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86 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2003-01-15 06:29:08
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87 | Add to Reading ListSource URL: www.senate.govLanguage: English - Date: 2002-10-02 14:11:06
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88 | Add to Reading ListSource URL: www.ars.usda.govLanguage: English - Date: 2010-01-05 14:47:59
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89 | Add to Reading ListSource URL: www.usda.govLanguage: English - Date: 2005-03-14 09:28:13
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90 | Add to Reading ListSource URL: www.biopreferred.govLanguage: English - Date: 2007-12-05 12:09:04
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