• Front Matter R1-R20

• Summary 1-18

• 1 Introduction 19-58

• 2 Environmental Impacts of Genetically Engineered Crops at the Farm Level 59-134

• 3 Farm-Level Economic Impacts 135-186

• 4 Farm-System Dynamics and Social Impacts of Genetic Engineering 187-212

• 5 Key Findings, Remaining Challenges, and Future Opportunities 213-236

• Appendix A: Herbicide Selection 237-244

• Appendix B: Tillage Systems 245-246

• Appendix C: Biographical Sketches of Committee Members 247-250

" 4 Farm-System Dynamics and Social Impacts of Genetic Engineering ." Impact of Genetically Engineered Crops on Farm Sustainability in the United States . Washington, DC: The National Academies Press, 2010 .

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