筛选: Committee members names sim Rogers, Thomas, Emory University 删除限定条件 Committee members names sim: Rogers, Thomas, Emory University Committee Eltis, David, Emory University 删除限定条件 Committee: Eltis, David, Emory University Degree PhD 删除限定条件 Degree: PhD Keyword Afro-Brazilians 删除限定条件 Keyword: Afro-Brazilians