筛选: Committee Anderson, Carol , Emory University 删除限定条件 Committee: Anderson, Carol , Emory University Committee Scully, Pamela F, Emory University 删除限定条件 Committee: Scully, Pamela F, Emory University Keyword 1975 删除限定条件 Keyword: 1975 Keyword South Africa 删除限定条件 Keyword: South Africa