41 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2006-09-26 11:44:10
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42 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 1998-04-29 03:00:00
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43 | Add to Reading ListSource URL: www.dcnr.state.pa.usLanguage: English - Date: 2013-02-04 11:27:59
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44 | Add to Reading ListSource URL: www.dcnr.state.pa.usLanguage: English - Date: 2013-02-04 11:29:14
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45 | Add to Reading ListSource URL: www.dcnr.state.pa.usLanguage: English - Date: 2013-02-04 11:11:12
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46 | Add to Reading ListSource URL: www.dcnr.state.pa.usLanguage: English - Date: 2013-02-04 11:38:07
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47 | Add to Reading ListSource URL: www.dcnr.state.pa.usLanguage: English - Date: 2013-02-04 11:13:56
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48 | Add to Reading ListSource URL: www.nr.gov.nl.caLanguage: English - Date: 2014-02-28 09:32:24
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49 | Add to Reading ListSource URL: www.dcnr.state.pa.usLanguage: English - Date: 2013-02-21 15:30:04
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50 | Add to Reading ListSource URL: nature.nps.govLanguage: English - Date: 2008-09-26 11:47:18
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