Volcanic rocks
Subtitle: an information brochure
Contributors: World Data Center A for Solid Earth Geophysics
Publisher: World Data Center A for Solid Earth Geophysics, National Geophysical Data Center
Published: 1985
Place of publication: Boulder, Colo
Language: eng
Number of pages: 11
Subjects: Volcanic ash, tuff, etc
Notes: "June 1985."

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