41 | Add to Reading ListSource URL: www.safetyauthority.caLanguage: English - Date: 2012-06-28 14:11:24
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42 | Add to Reading ListSource URL: www.nist.govLanguage: English - Date: 2011-03-09 11:39:54
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43 | Add to Reading ListSource URL: www.aetn.orgLanguage: English - Date: 2012-03-19 17:21:34
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44 | Add to Reading ListSource URL: nist.govLanguage: English - Date: 2010-09-03 13:42:03
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45 | Add to Reading ListSource URL: tc.gc.caLanguage: English - Date: 2009-10-02 13:24:06
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46 | Add to Reading ListSource URL: physics.nist.govLanguage: English - Date: 2011-12-23 14:39:50
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47 | Add to Reading ListSource URL: www.bipm.orgLanguage: English - Date: 2014-01-16 08:59:46
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48 | Add to Reading ListSource URL: physics.nist.govLanguage: English - Date: 2011-12-23 14:39:59
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49 | Add to Reading ListSource URL: lamar.colostate.eduLanguage: English - Date: 2006-08-29 12:34:52
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50 | Add to Reading ListSource URL: www.nist.govLanguage: English - Date: 2010-07-27 11:08:02
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