"atoms." . . "Astrochemie." . . "Raigs X Aplicacions." . . "Radiation, Ionizing." . . "Röntgenspectroscopie." . . "Anàlisi espectral." . . . . "Hafnium." . . "Earth (Planet)" . . . . . . . . . . . . . . . . . . . . . . . . "Chemical analysis by x-rays and its applications. [With plates, including a portrait.]" . . . . . . "Chemical analysis by X-rays and its applications"@en . "Chemical analysis by X-rays and its applications" . . . . . . . . . . . "Chemical Analysis by x-rays and its applications" . . . . . "Hafnium Propriétés chimiques." . . "Géochimie." . . "X-Rays." . . "Rayons X." . . "molecules." . . "Chimie analytique." . . "Spectrum Analysis." . .