31 | Add to Reading ListSource URL: www.abd-bvd.beLanguage: English - Date: 2013-06-16 16:19:21
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32 | Add to Reading ListSource URL: pcp.vub.ac.beLanguage: English - Date: 2006-12-13 07:30:19
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33 | Add to Reading ListSource URL: people.ischool.berkeley.eduLanguage: English - Date: 2009-02-06 14:53:01
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34 | Add to Reading ListSource URL: unesdoc.unesco.orgLanguage: English - Date: 2013-09-16 00:33:54
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35 | Add to Reading ListSource URL: pcp.vub.ac.beLanguage: English - Date: 2012-05-16 09:47:51
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36 | Add to Reading ListSource URL: assets.chemheritage.orgLanguage: English - Date: 2010-07-21 21:27:16
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37 | Add to Reading ListSource URL: wolfgang-ruge.nameLanguage: German - Date: 2010-05-24 13:56:00
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38 | Add to Reading ListSource URL: polaris.gseis.ucla.eduLanguage: English - Date: 2008-09-30 02:19:41
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39 | Add to Reading ListSource URL: people.lis.illinois.eduLanguage: English - Date: 2007-09-25 14:56:30
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40 | Add to Reading ListSource URL: people.lis.illinois.eduLanguage: English - Date: 2007-09-25 14:56:30
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