51 | Add to Reading ListSource URL: calval.cr.usgs.govLanguage: English - Date: 2009-04-23 16:11:43
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52 | Add to Reading ListSource URL: calval.cr.usgs.govLanguage: English - Date: 2009-04-23 16:11:43
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53 | Add to Reading ListSource URL: calval.cr.usgs.govLanguage: English - Date: 2009-04-23 16:11:42
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54 | Add to Reading ListSource URL: calval.cr.usgs.govLanguage: English - Date: 2009-04-23 16:11:43
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55 | Add to Reading ListSource URL: calval.cr.usgs.govLanguage: English - Date: 2009-04-23 16:11:43
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56 | Add to Reading ListSource URL: calval.cr.usgs.govLanguage: English - Date: 2009-04-23 16:11:44
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57 | Add to Reading ListSource URL: calval.cr.usgs.govLanguage: English - Date: 2009-04-23 16:11:42
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58 | Add to Reading ListSource URL: calval.cr.usgs.govLanguage: English - Date: 2009-04-23 16:11:42
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59 | Add to Reading ListSource URL: www.middlebury.eduLanguage: English - Date: 2014-12-03 19:24:55
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60 | Add to Reading ListSource URL: calval.cr.usgs.govLanguage: English - Date: 2009-04-23 16:11:43
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