title: The study of atomic processes with the photographic plate.
authors.forename: H K
authors.initials: HK
authors.lastname: HEITLER
authors.forename: D T
authors.initials: DT
authors.lastname: KING
mesh_terms: D003359:Cosmic Radiation; D006801:Humans; D007554:Isotopes; D009686:Nuclear Physics; D010781:Photography
chemical_list: D007554:Isotopes
keywords: COSMIC RAYS; NUCLEAR PHYSICS