41 | Add to Reading ListSource URL: www.earthworksaction.orgLanguage: English - Date: 2012-10-24 12:30:59
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42 | Add to Reading ListSource URL: ehp.niehs.nih.govLanguage: English - Date: 2015-04-02 14:10:53
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43 | Add to Reading ListSource URL: s3.amazonaws.comLanguage: English - Date: 2011-05-06 03:37:51
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44 | Add to Reading ListSource URL: www.gcssepm.orgLanguage: English - Date: 2012-01-09 12:41:38
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45 | Add to Reading ListSource URL: www.rural.palegislature.usLanguage: English - Date: 2014-09-15 13:09:12
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46 | Add to Reading ListSource URL: www.rural.palegislature.usLanguage: English - Date: 2014-09-15 13:09:09
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47 | Add to Reading ListSource URL: pa.water.usgs.govLanguage: English - Date: 2003-03-04 16:34:28
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48 | Add to Reading ListSource URL: www.eia.govLanguage: English - Date: 2015-04-15 15:14:05
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49 | Add to Reading ListSource URL: www.dcnr.state.pa.usLanguage: English - Date: 2015-04-06 08:35:04
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50 | Add to Reading ListSource URL: www.brucehardie.comLanguage: English - Date: 2009-06-14 12:43:58
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