title: Opportunity for natural selection among some selected population groups of Northeast India.
authors.affiliation: Department of Anthropology, Dibrugarh University, Dibrugarh, Assam - 786 004, India.
authors.forename: Farida Ahmed
authors.initials: FA
authors.lastname: Das
authors.forename: Sikdar
authors.initials: S
authors.lastname: Mithun
keywords:  selection intensity; Fertility; Northeast India; mortality