11 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2009-01-29 14:26:44
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12 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-03-07 14:08:13
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13 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2008-01-31 14:27:39
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14 | Add to Reading ListSource URL: www.eucon-elektronik.comLanguage: English - Date: 2003-11-13 09:51:05
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15 | Add to Reading ListSource URL: www.rjrpolymers.comLanguage: English - Date: 2009-07-31 15:36:58
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16 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-01-26 15:17:58
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