title: Geographical Distribution and Cytology of "Sex Ratio" in Drosophila Pseudoobscura and Related Species.
authors.affiliation: Wm. G. Kerckhoff Laboratories of the Biological Sciences California Institute of Technology, Pasadena, California.
authors.forename: A H
authors.initials: AH
authors.lastname: Sturtevant
authors.forename: T
authors.initials: T
authors.lastname: Dobzhansky