US sends mixed message in GM debate...as questions emerge over cost-effectiveness.
Reichhardt
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D000383:Agriculture; D001709:Biotechnology; D003132:Commerce; D003362:Cost-Benefit Analysis; D018556:Crops, Agricultural / Q000191:economics; D005060:Europe; D005818:Genetic Engineering / Q000191:economics / Q000331:legislation & jurisprudence; D014481:United States; D016885:United States Department of Agriculture; D014484:United States Environmental Protection Agency