21 | Add to Reading ListSource URL: chemistry.caltech.eduLanguage: English - Date: 2014-09-25 18:53:17
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22 | Add to Reading ListSource URL: www.acs.orgLanguage: English - Date: 2013-05-08 12:26:36
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23 | Add to Reading ListSource URL: www.middleschoolchemistry.comLanguage: English - Date: 2011-12-23 14:40:24
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24 | Add to Reading ListSource URL: www.middleschoolchemistry.comLanguage: English - Date: 2011-12-23 14:40:04
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25 | Add to Reading ListSource URL: www.ncnr.nist.govLanguage: English - Date: 2003-11-10 15:28:37
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26 | Add to Reading ListSource URL: csb.stanford.eduLanguage: English - Date: 2002-01-07 23:47:24
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27 | Add to Reading ListSource URL: www.modgraph.co.ukLanguage: English - Date: 2012-01-10 04:05:02
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28 | Add to Reading ListSource URL: www.modgraph.co.ukLanguage: English - Date: 2012-01-10 04:04:48
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29 | Add to Reading ListSource URL: www.wiley-vch.deLanguage: English - Date: 2012-03-25 21:04:28
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30 | Add to Reading ListSource URL: www.helical-structures.orgLanguage: English - Date: 2004-01-30 16:44:40
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