title: [New material on Academician N. I. Grashchenkov].
authors.forename: M N
authors.initials: MN
authors.lastname: Levitin
mesh_terms: D049673:History, 20th Century; D011634:Public Health / Q000266:history; D012425:Russia (Pre-1917)
vernacular_title: Novye materialy ob akademike N. I. Grashchenkove.