title: A Statistical Analysis of 3,219 Persons : Certified Blind at the Regional Clinic for Certification of the Blind, Glasgow and South-West Scotland, during the Period 1929-1935.
authors.affiliation: Glasgow Central Blind Clinic.
authors.forename: J
authors.initials: J
authors.lastname: Marshall
authors.forename: H E
authors.initials: HE
authors.lastname: Seiler