51 | Add to Reading ListSource URL: manure.mb.caLanguage: English - Date: 2013-11-27 15:22:17
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52 | Add to Reading ListSource URL: www.ipic.iastate.eduLanguage: English - Date: 2010-05-05 17:26:40
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53 | Add to Reading ListSource URL: pubs.nal.usda.govLanguage: English - Date: 2014-07-25 15:39:06
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54 | Add to Reading ListSource URL: www.ars.usda.govLanguage: English - Date: 2006-06-27 14:13:02
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55 | Add to Reading ListSource URL: www-naweb.iaea.orgLanguage: English - Date: 2007-03-06 10:27:34
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56 | Add to Reading ListSource URL: www.extension.orgLanguage: English - Date: 2013-09-20 10:33:56
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57 | Add to Reading ListSource URL: www.extension.orgLanguage: English - Date: 2010-03-18 10:53:54
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58 | Add to Reading ListSource URL: www.stri.si.eduLanguage: English - Date: 2011-06-01 12:04:45
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59 | Add to Reading ListSource URL: www.mona.uwi.eduLanguage: English - Date: 2006-07-13 09:31:33
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60 | Add to Reading ListSource URL: www.agronomycanada.comLanguage: English - Date: 2012-10-30 22:32:30
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