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    31. Americans on a new frontier: U.S. technicians lend a hand abroad

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    33. An appraisal of factors affecting the acceptance and use of fertilizer in Iowa

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    34. An economic analysis of the potential value of site-specific soil fertility management information in a corn-soybean production system

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    36. An inertia model for the adoption of new farming practices

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    37. An overview of innovation decision by farmers and communications strategies

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    38. Association of certain personnel characteristics of farmers with their attitude towards soil testing

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    39. At the 20th Century's close: framing the public policy issue of environmental risk

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