51 | Add to Reading ListSource URL: www.gisci.orgLanguage: English - Date: 2012-10-16 13:59:20
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52 | Add to Reading ListSource URL: www.gisci.orgLanguage: English - Date: 2012-10-16 15:31:12
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53 | Add to Reading ListSource URL: www.nacep.orgLanguage: English - Date: 2010-02-02 11:51:45
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54 | Add to Reading ListSource URL: onlinepubs.trb.orgLanguage: English - Date: 2008-06-05 13:00:26
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55 | Add to Reading ListSource URL: www.indiana.eduLanguage: English - Date: 2014-07-23 09:36:02
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56 | Add to Reading ListSource URL: www.amstat.orgLanguage: English - Date: 2013-04-01 16:15:47
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57 | Add to Reading ListSource URL: www.crrc.geLanguage: English |
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58 | Add to Reading ListSource URL: www.indiana.eduLanguage: English - Date: 2014-07-23 09:36:02
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59 | Add to Reading ListSource URL: www.census.govLanguage: English - Date: 2011-07-25 12:05:55
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60 | Add to Reading ListSource URL: www.aapor.orgLanguage: English - Date: 2009-08-30 02:00:00
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