Size and shape measurements of ash particles from the May 18, 1980 eruption of Mount St. Helens
By: by Robert A. Zielinski and Michael B. Sawyer.
Contributors: Sawyer, Michael B.; Geological Survey (U.S.)
Series: Open file report -- 81-114.; Open-file report (Geological Survey (U.S.)) -- 81-114.
Publisher: U.S. Geological Survey]
Published: 1980
Place of publication: [Denver, Colo
Language: eng
Format: Microform
Subjects: Volcanic ash, tuff, etc. -- Washington (State) -- Saint Helens, Mount.
Notes: Microfiche. [Denver, Colo. : U.S. Geological Survey, 1981?]. 1 microfiche ; 11 x 15 cm.

Bibliography: leaf 18.