31 | Add to Reading ListSource URL: www.amige.com- Date: 2016-05-06 13:09:42
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32 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2016-04-04 10:52:14
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33 | Add to Reading ListSource URL: www.refractories-worldforum.comLanguage: English - Date: 2015-06-16 07:58:14
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34 | Add to Reading ListSource URL: edwclevy.comLanguage: English - Date: 2014-04-30 17:04:00
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35 | Add to Reading ListSource URL: www.cambriacountyhistorical.comLanguage: English - Date: 2015-07-15 10:40:24
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36 | Add to Reading ListSource URL: www.worldsteel.orgLanguage: English |
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37 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2016-03-29 15:30:07
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38 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2016-04-04 10:52:30
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39 | Add to Reading ListSource URL: isc.mst.eduLanguage: English - Date: 2014-01-22 05:22:51
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40 | Add to Reading ListSource URL: www.refractories-worldforum.comLanguage: English - Date: 2013-06-27 05:32:43
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