21 | Add to Reading ListSource URL: www.centralsteel.comLanguage: English - Date: 2013-09-18 11:39:30
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22 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-01-19 13:36:09
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23 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-11-09 15:05:48
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24 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-03-30 11:53:14
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25 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-02-14 13:33:51
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26 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-01-29 12:21:43
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27 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1998-02-26 09:21:58
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28 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-03-07 17:24:09
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29 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-03-06 14:13:22
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30 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2001-02-01 13:53:22
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