title: On the existence of very weak energies of radium D y-rays.
authors.lastname: TSIEN
authors.lastname: SAN-TSIANG
authors.forename: C
authors.initials: C
authors.lastname: MARTY
mesh_terms: D011827:Radiation; D011883:Radium
chemical_list: D011883:Radium
keywords: RADIATIONS; RADIUM
vernacular_title: Sur l'existence des rayons y de tres faibles énergies du radium D.