311 | Add to Reading ListSource URL: www.physics.umd.eduLanguage: English - Date: 2007-04-26 12:43:48
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312 | Add to Reading ListSource URL: www.ucolick.orgLanguage: English - Date: 2013-07-09 17:52:10
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313 | Add to Reading ListSource URL: www.nist.govLanguage: English - Date: 2011-10-03 14:10:01
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314 | Add to Reading ListSource URL: tf.nist.govLanguage: English - Date: 2002-03-11 17:06:30
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315 | Add to Reading ListSource URL: www.cstam.org.cnLanguage: English - Date: 2007-03-26 02:38:06
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316 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-01-24 10:26:15
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317 | Add to Reading ListSource URL: www.ptb.deLanguage: English - Date: 2011-07-06 03:32:51
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318 | Add to Reading ListSource URL: tf.nist.govLanguage: English - Date: 2005-03-14 17:09:57
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319 | Add to Reading ListSource URL: tf.nist.govLanguage: English - Date: 2002-11-13 16:56:20
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320 | Add to Reading ListSource URL: tf.nist.govLanguage: English - Date: 2001-09-28 17:42:28
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