title: Intrinsic and extrinsic factors in the primary development of the skeleton.
authors.affiliation: Department of Zoology, University of Sydney, Australia.
authors.forename: P D F
authors.initials: PD
authors.lastname: Murray
authors.affiliation: Department of Zoology, University of Sydney, Australia.
authors.forename: Doris
authors.initials: D
authors.lastname: Selby