21 | Add to Reading ListSource URL: www.lmi.caltech.eduLanguage: English - Date: 2014-01-28 16:31:49
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22 | Add to Reading ListSource URL: www.nrel.govLanguage: English - Date: 2006-06-06 17:50:33
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23 | Add to Reading ListSource URL: www.pringlecreek.comLanguage: English - Date: 2013-06-07 00:21:30
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24 | Add to Reading ListSource URL: westcampus.yale.eduLanguage: English - Date: 2013-08-13 19:45:19
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25 | Add to Reading ListSource URL: www.metricationmatters.comLanguage: English - Date: 2009-07-15 10:07:31
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26 | Add to Reading ListSource URL: www.puc.sd.govLanguage: English - Date: 2006-07-19 10:34:15
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27 | Add to Reading ListSource URL: www.usc.eduLanguage: English - Date: 2014-03-26 11:23:20
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28 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2008-08-29 11:46:45
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29 | Add to Reading ListSource URL: earth.columbia.eduLanguage: English - Date: 2012-01-11 16:11:32
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30 | Add to Reading ListSource URL: www.ext.colostate.eduLanguage: English - Date: 2012-07-16 16:20:41
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