21 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-03-16 15:28:08
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22 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-11-27 14:48:32
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23 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-04-16 11:13:34
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24 | Add to Reading ListSource URL: www.modernsteel.comLanguage: English - Date: 2012-03-01 15:20:11
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25 | Add to Reading ListSource URL: www.modernsteel.comLanguage: English - Date: 2011-10-24 18:35:49
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26 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-01-19 13:36:09
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27 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-11-09 15:05:48
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28 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-08-24 09:17:43
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29 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-12-12 09:50:46
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30 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-06-27 16:55:47
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