title: Birth order, coital rates, polygyny, stress, and the secondary sex ratio: a reply to James.
authors.affiliation: Department of Anthropology, Arizona State University, Tempe, USA.
authors.forename: J F
authors.initials: JF
authors.lastname: Martin
mesh_terms: D000818:Animals; D001130:Arizona / Q000453:epidemiology; D001722:Birth Order; D003075:Coitus; D005260:Female; D005306:Fertilization / Q000502:physiology*; D006801:Humans; D007198:Indians, North American; D008297:Male; D008393:Marriage; D008954:Models, Biological; D012744:Sex Ratio; D013312:Stress, Physiological