1 | Add to Reading ListSource URL: www.tripnet.orgLanguage: English - Date: 2013-04-02 13:50:51
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2 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2006-09-01 10:02:59
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3 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2012-01-18 12:50:19
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4 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2006-09-11 13:30:00
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5 | Add to Reading ListSource URL: www.iowadot.govLanguage: English - Date: 2014-06-30 17:20:05
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