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"Managing the Effects of Spray Water Quality on the Efficacy of NAA Stop-Drop Sprays\u2014Things We Used to Know(?), but Forgot"^^<http://www.w3.org/2001/XMLSchema#string>
<http://extension.psu.edu/plants/tree-fruit/news/2012/managing-the-effects-of-spray-water-quality-on-the-efficacy-of-naa-stop-drop-sprays2014things-we-used-to-know-but-forgot>