281 | Add to Reading ListSource URL: profile.usgs.govLanguage: English - Date: 2012-06-22 20:39:13
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282 | Add to Reading ListSource URL: profile.usgs.govLanguage: English - Date: 2012-06-25 18:17:11
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283 | Add to Reading ListSource URL: woodshole.er.usgs.govLanguage: English - Date: 2007-01-04 10:01:33
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284 | Add to Reading ListSource URL: tectonics.caltech.eduLanguage: English - Date: 2011-09-12 17:11:22
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285 | Add to Reading ListSource URL: profile.usgs.govLanguage: English - Date: 2012-06-22 21:26:08
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286 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2002-03-13 11:38:56
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287 | Add to Reading ListSource URL: profile.usgs.govLanguage: English - Date: 2012-06-25 18:20:47
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288 | Add to Reading ListSource URL: www.ogs.ou.eduLanguage: English - Date: 2009-11-17 17:02:11
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289 | Add to Reading ListSource URL: www.undeerc.orgLanguage: English - Date: 2005-12-30 15:47:09
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290 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2001-06-15 14:17:48
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