41 | Add to Reading ListSource URL: www.centreforenergy.caLanguage: English - Date: 2006-10-25 11:14:59
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42 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2011-09-06 13:00:58
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43 | Add to Reading ListSource URL: www.oilheritage.orgLanguage: English - Date: 2006-02-22 15:17:34
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44 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2010-08-17 17:57:00
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45 | Add to Reading ListSource URL: www.rrt10nwac.comLanguage: English - Date: 2008-12-18 15:25:41
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46 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2012-11-15 11:20:19
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47 | Add to Reading ListSource URL: canada-indiabusiness.caLanguage: English - Date: 2014-07-28 13:27:14
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48 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2010-08-18 16:48:21
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49 | Add to Reading ListSource URL: www.aer.caLanguage: English - Date: 2013-05-13 14:19:39
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50 | Add to Reading ListSource URL: ftp.dot.state.tx.usLanguage: English - Date: 2006-10-19 16:05:43
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