11 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2015-02-03 11:23:39
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12 | Add to Reading ListSource URL: ag.udel.eduLanguage: English - Date: 2001-05-02 07:37:35
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13 | Add to Reading ListSource URL: www.researchandmarkets.comLanguage: English |
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14 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2010-11-04 08:06:38
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15 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2015-01-09 10:20:41
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16 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-11-17 12:55:33
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17 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-10-02 15:47:10
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18 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-09-23 16:02:35
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19 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-10-21 15:53:54
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20 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2014-08-28 10:58:00
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