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    11. Economic Analyses of Steps in Improved Technology Experiments

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    12. Evolution of an agricultural innovation: the N-Trak soil nitrogen test - adopt and discontinue, or reject?

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    14. Farmer field school on nutrient management

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    17. McLean county farmers speak up!

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    19. Participatory technology development on soil fertility improvement in Cameroon

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    20. Pro-environmental analysis of farmers' concerns and behaviors towards soil conservation in central district of Sari County, Iran

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