Physicochemical or geochemical
- (1981),
Quantitative analysis of Mount St. Helens ash by X-ray diffraction and X-ray fluorescence spectrometry
, Journal of Applied Meteorology, 20, 922-933, 10.1175/1520-0450(1981)020<0922:QAOMSH>2.0.CO;2
,
Quantitative analysis of Mount St. Helens ash by X-ray diffraction and X-ray fluorescence spectrometry, Journal of Applied Meteorology, 20, 922-933, 10.1175/1520-0450(1981)020<0922:QAOMSH>2.0.CO;2