31 | Add to Reading ListSource URL: resources.cas.psu.eduLanguage: English - Date: 2004-09-22 13:32:00
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32 | Add to Reading ListSource URL: www.ars.usda.govLanguage: English - Date: 2009-06-29 12:24:43
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33 | Add to Reading ListSource URL: pubs.ext.vt.eduLanguage: English - Date: 2014-08-21 11:52:39
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34 | Add to Reading ListSource URL: wci.colostate.eduLanguage: English - Date: 2011-11-08 22:29:51
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35 | Add to Reading ListSource URL: www.uvm.eduLanguage: English - Date: 2013-01-25 08:11:29
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36 | Add to Reading ListSource URL: www.ir4.rutgers.eduLanguage: English - Date: 2006-08-01 14:27:54
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37 | Add to Reading ListSource URL: ohioline.osu.eduLanguage: English - Date: 2008-02-21 16:26:45
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38 | Add to Reading ListSource URL: www.ars.usda.govLanguage: English - Date: 2011-01-14 18:27:45
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39 | Add to Reading ListSource URL: www.ibac.infoLanguage: English - Date: 2011-01-17 18:35:32
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40 | Add to Reading ListSource URL: www.cotton.orgLanguage: English - Date: 2004-07-14 12:33:21
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