筛选: Committee Jacho-Chavez, David, Emory University 删除限定条件 Committee: Jacho-Chavez, David, Emory University Committee Schnier, Kurt, Georgia State University 删除限定条件 Committee: Schnier, Kurt, Georgia State University Keyword CO2 emissions 删除限定条件 Keyword: CO2 emissions Keyword corn yield 删除限定条件 Keyword: corn yield Keyword oil supply elasticity 删除限定条件 Keyword: oil supply elasticity