141 | Add to Reading ListSource URL: www.paroscientific.comLanguage: English - Date: 2011-05-05 14:03:56
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142 | Add to Reading ListSource URL: nistboulder.netLanguage: English - Date: 2006-05-22 16:07:13
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143 | Add to Reading ListSource URL: tf.nist.govLanguage: English - Date: 2009-04-02 14:30:37
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144 | Add to Reading ListSource URL: nistboulder.netLanguage: English - Date: 2006-08-14 13:15:22
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145 | Add to Reading ListSource URL: www.tf.nist.govLanguage: English - Date: 2006-01-03 12:15:10
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146 | Add to Reading ListSource URL: tf.boulder.nist.govLanguage: English - Date: 2009-09-09 19:22:49
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147 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2001-02-01 13:39:19
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148 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2014-03-07 16:37:23
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149 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 2000-03-07 08:20:50
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150 | Add to Reading ListSource URL: www.arrl.orgLanguage: English - Date: 2013-11-14 16:15:54
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