121 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1996-09-04 14:55:32
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122 | Add to Reading ListSource URL: www.ed-alliance.orgLanguage: English - Date: 2012-12-19 11:58:25
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123 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-08-31 11:04:02
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124 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-04-25 11:03:44
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125 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1997-09-30 09:05:19
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126 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1997-03-05 14:01:03
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127 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-11-02 12:51:31
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128 | Add to Reading ListSource URL: www.ed-alliance.orgLanguage: English - Date: 2013-05-02 13:23:57
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129 | Add to Reading ListSource URL: www.ed-alliance.orgLanguage: English - Date: 2012-01-26 13:51:34
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130 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-11-15 11:12:10
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