261 | Add to Reading ListSource URL: water.usgs.govLanguage: English - Date: 2005-06-24 10:31:12
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262 | Add to Reading ListSource URL: water.usgs.govLanguage: English - Date: 2003-06-18 11:36:15
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263 | Add to Reading ListSource URL: water.usgs.govLanguage: English - Date: 2005-06-24 14:48:17
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264 | Add to Reading ListSource URL: www.iowaagriculture.govLanguage: English - Date: 2012-06-26 16:14:27
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265 | Add to Reading ListSource URL: water.usgs.govLanguage: English - Date: 2005-06-24 10:09:24
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266 | Add to Reading ListSource URL: water.usgs.govLanguage: English - Date: 2005-06-24 10:28:27
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267 | Add to Reading ListSource URL: water.usgs.govLanguage: English - Date: 2005-06-24 14:41:15
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268 | Add to Reading ListSource URL: water.usgs.govLanguage: English - Date: 2005-06-24 14:46:42
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269 | Add to Reading ListSource URL: www.nrri.umn.eduLanguage: English - Date: 2011-07-29 10:57:48
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270 | Add to Reading ListSource URL: www.agmrc.orgLanguage: English - Date: 2008-09-26 13:25:40
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