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Estimating the marginal productivity of pesticides on predominantly crop farms in north-east KansasJanke, Allen W January 2011 (has links)
Photocopy of typescript. / Digitized by Kansas Correctional Industries
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A comparison of the effectiveness of four units of instruction for pesticide certification in KansasZahn, Dennis Gilbert January 2010 (has links)
Digitized by Kansas Correctional Industries
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