title: [The first optometrist of Russia L. N. Gassovskiĭ].
authors.forename: L D
authors.initials: LD
authors.lastname: Aĭzenshtat
authors.forename: B V
authors.initials: BV
authors.lastname: Ovchinnikov
mesh_terms: D049673:History, 20th Century; D009907:Optometry / Q000266:history; D014586:USSR
vernacular_title: Pervyĭ optometrist Rossii L. N. Gassovskiĭ.