41 | Add to Reading ListSource URL: setis.ec.europa.euLanguage: English - Date: 2015-01-16 02:43:49
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42 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-12-06 12:05:33
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43 | Add to Reading ListSource URL: water.epa.govLanguage: English - Date: 2014-12-11 14:42:30
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44 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-11-21 17:39:45
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45 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-09-15 15:44:12
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46 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-09-29 17:13:57
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47 | Add to Reading ListSource URL: www.worldsteel.orgLanguage: English |
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48 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2014-06-17 08:24:43
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49 | Add to Reading ListSource URL: www.materials.cmu.eduLanguage: English - Date: 2007-04-14 21:37:02
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50 | Add to Reading ListSource URL: www.materials.cmu.eduLanguage: English - Date: 2007-04-10 10:10:31
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