51 | Add to Reading ListSource URL: datapreservation.usgs.govLanguage: English - Date: 2016-08-05 14:26:25
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52 | Add to Reading ListSource URL: geotech.mst.eduLanguage: English - Date: 2014-01-22 04:03:29
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53 | Add to Reading ListSource URL: www.cv.nctu.edu.twLanguage: English - Date: 2006-11-09 02:46:08
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54 | Add to Reading ListSource URL: www.krisweb.comLanguage: English - Date: 2011-02-14 06:38:39
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55 | Add to Reading ListSource URL: www.rpl.uh.eduLanguage: English - Date: 2011-10-10 15:19:58
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56 | Add to Reading ListSource URL: www.kenken.go.jpLanguage: English - Date: 2015-10-15 21:00:44
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57 | Add to Reading ListSource URL: wwwrcamnl.wr.usgs.govLanguage: English - Date: 2000-03-27 19:49:34
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58 | Add to Reading ListSource URL: www.earthscienceeducation.comLanguage: English - Date: 2016-04-25 14:51:30
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59 | Add to Reading ListSource URL: www.sid.irLanguage: English - Date: 2014-07-27 20:58:43
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60 | Add to Reading ListSource URL: wwwrcamnl.wr.usgs.govLanguage: English - Date: 2000-03-27 19:58:12
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