David E. Clay

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Precision Agriculture Basics: 176 (ASA, CSSA, and SSSA Books)
Shannon, D. Kent; Clay, David E.; Kitchen, Newell R.

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� 39.41

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Practical Mathematics for Precision Farming: 168 (ASA, CSSA, and SSSA Books)
Clay, David E.; Clay, Sharon A.; Bruggeman, Stephanie A.

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Social Structure and Rural Development in the Third World

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� 25.94

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GIS APPLICATIONS IN AGRICULTURE VOLUME 2: NUTRIENT MANAGEMENT FOR ENERGY EFFICIENCY,

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� 66

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Salinity and Sodicity: A Growing Global Challenge to Food Security, Environmental Quality and Soil Resilience (ASA, CSSA, and SSSA Books)

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� 69.18

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GIS Applications in Agriculture, Volume Two: Nutrient Management for Energy Efficiency

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� 97.44

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