LUTHER G. TWEETEN is Anderson Professor of Agricultural Marketing, Policy, and Trade at the Ohio State University. Dr. Tweeten is coauthor, with Tesfa G. Gebremedhin, of Research Methods and Communication in the Social Sciences (Praeger, 1994).DONALD G. MCCLELLAND is an economist with twenty-two years of experience with USAID. Mr. McClelland has worked for sixteen years with the USAID's policy office as a policy advisor and economic analyst for food and agriculture.

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