title: [Advances of obstetrics in Mexico in the last 50 years. 1951].
authors.forename: Isidro
authors.initials: I
authors.lastname: Espinosa y de los Reyes
mesh_terms: D049673:History, 20th Century; D008800:Mexico; D009774:Obstetrics / Q000266:history* / Q000639:trends; D013997:Time Factors