title: The localization and assay of chemical elements by microprobe methods.
mesh_terms: D004577:Electron Probe Microanalysis / Q000379:methods*; D007477:Ions; D007834:Lasers; D013058:Mass Spectrometry / Q000379:methods; D011522:Protons; D013057:Spectrum Analysis / Q000379:methods
chemical_list: D007477:Ions; D011522:Protons