title: An elemental mystery.
authors.forename: A M
authors.initials: AM
authors.lastname: Hayashi
mesh_terms: D002627:Chemistry, Physical / Q000266:history*; D049673:History, 20th Century; D013052:Spectrometry, X-Ray Emission; D013667:Technetium / Q000266:history*
chemical_list: D013667:Technetium