title: Robbins and the reproductive ratio: a note on the fall in the birth-rate after 1964.
authors.forename: W H
authors.initials: WH
authors.lastname: Armytage
mesh_terms: D003267:Contraception / Q000266:history*; D005193:Family Planning Services / Q000266:history*; D049711:History, Modern 1601-; D006113:United Kingdom