001B30C20F Raman and Rayleigh spectra (including optical scattering).
001B30C20K Visible spectra.
001B30C20L Ultraviolet spectra.
001B30C20N Vacuum ultraviolet spectra.
001B30C20R X-ray spectra.
001B30C20S Rotational analysis.
001B30C20T Vibrational analysis.
001B30C20V Vibration-rotation analysis.
001B30C20W Vibronic, rovibronic and rotation-electron-spin interactions.
001B30C25 Nuclear resonance and relaxation.
001B30C35 Electron resonance and relaxation.
001B30C40 Multiple resonances (including double and higher-order resonance processes, such as double nuclear magnetic resonance, electron double resonance and microwave optical double resonance).