51 | Add to Reading ListSource URL: www.pesa.comLanguage: English - Date: 2014-06-08 02:54:02
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52 | Add to Reading ListSource URL: rock.geosociety.orgLanguage: English - Date: 2014-08-01 19:04:32
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53 | Add to Reading ListSource URL: www.geosociety.orgLanguage: English - Date: 2014-08-01 19:04:32
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54 | Add to Reading ListSource URL: photonicssociety.orgLanguage: English - Date: 2013-06-20 09:16:13
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55 | Add to Reading ListSource URL: spie.orgLanguage: English - Date: 2014-10-23 17:06:23
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56 | Add to Reading ListSource URL: www.bipm.orgLanguage: English - Date: 2012-08-28 03:52:20
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57 | Add to Reading ListSource URL: aas.orgLanguage: English - Date: 2014-08-05 09:46:44
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58 | Add to Reading ListSource URL: phys.orgLanguage: English - Date: 2014-10-23 07:27:58
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59 | Add to Reading ListSource URL: fs.usda.govLanguage: English - Date: 2013-05-20 14:12:33
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60 | Add to Reading ListSource URL: asc.harvard.eduLanguage: English - Date: 2008-12-18 13:55:50
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