31 | Add to Reading ListSource URL: www.fhwa.dot.govLanguage: English - Date: 2003-03-27 11:04:49
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32 | Add to Reading ListSource URL: www.fhwa.dot.govLanguage: English - Date: 2004-11-09 13:14:44
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33 | Add to Reading ListSource URL: www.fhwa.dot.govLanguage: English - Date: 2001-10-26 12:33:34
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34 | Add to Reading ListSource URL: www.fhwa.dot.govLanguage: English - Date: 2003-12-11 15:32:02
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35 | Add to Reading ListSource URL: www.fhwa.dot.govLanguage: English - Date: 1998-02-24 12:09:58
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36 | Add to Reading ListSource URL: www.fhwa.dot.govLanguage: English - Date: 1998-02-24 11:40:14
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37 | Add to Reading ListSource URL: www.fhwa.dot.govLanguage: English - Date: 2006-11-09 09:41:57
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38 | Add to Reading ListSource URL: www.fhwa.dot.govLanguage: English - Date: 2008-01-30 11:20:16
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39 | Add to Reading ListSource URL: www.i73insc.comLanguage: English - Date: 2007-11-29 19:03:47
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40 | Add to Reading ListSource URL: pubs.usgs.govLanguage: English - Date: 2004-04-28 10:01:48
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