61 | Add to Reading ListSource URL: www.blm.govLanguage: English - Date: 2014-12-10 15:33:21
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62 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 1998-04-29 03:00:00
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63 | Add to Reading ListSource URL: ngmdb.usgs.govLanguage: English - Date: 2014-01-18 09:40:06
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64 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2011-07-14 13:03:37
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65 | Add to Reading ListSource URL: ngmdb.usgs.govLanguage: English - Date: 2014-01-18 09:40:03
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66 | Add to Reading ListSource URL: ngmdb.usgs.govLanguage: English - Date: 2014-01-18 09:40:02
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67 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2007-07-26 14:16:53
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68 | Add to Reading ListSource URL: ngmdb.usgs.govLanguage: English - Date: 2014-01-18 09:40:04
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69 | Add to Reading ListSource URL: www.geo.oregonstate.eduLanguage: English - Date: 2013-03-07 20:30:32
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70 | Add to Reading ListSource URL: www.geo.oregonstate.eduLanguage: English - Date: 2013-03-07 20:30:33
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