title: Geographical variation and evolution of tertiary sexual equilibrium in the province of Jujuy (Argentina).
abstract: The tertiary sex ratio, as measured by the masculinity index, was examined in four regions of the Province of Jujuy in north-west Argentina over a period from 1869 to 1991. The results showed that inter-regional, as well as age group differences in MI existed which could be related to changing social and economic conditions in this area over the last two centuries.
authors.affiliation: Instituto de Biología de la Altura, Universidad Nacional de Jujuy, Argentina.
authors.forename: J E
authors.initials: JE
authors.lastname: Dipierri
authors.forename: E
authors.initials: E
authors.lastname: Alfaro
mesh_terms: D000367:Age Factors; D001118:Argentina; D005260:Female; D006801:Humans; D008297:Male; D012111:Residence Characteristics; D012744:Sex Ratio; D012959:Socioeconomic Factors