Opportunity for natural selection in Sweden
Subtitle: a study of childhood mortality and differential reproductivity
By: by Helen M. E. Hed
Contributors: Umeå universitet
Publisher: [s.n.]
Published: 1986
Place of publication: [s.l.]
Language: eng
Notes: Verdedigd als proefschrift Umeå (gebaseerd op artikelen van H.M.E. Hed en M. Rasmuson)

Thesis (doctoral)--University of Umeå, 1986.