Abrasion hardness.
Series: Fifth special report of the Hawaiian Volcano Observatory, of the Hawaiian Volcano Research Association, and the U.S. Geological Survey; Special reports (Hawaiian Volcano Observatory) -- 5.
Publisher: Hawaiian Volcano Research Association
Published: 1950
Place of publication: Honolulu
Language: eng
Number of pages: 43
Subjects: Hardness; Abrasives
Notes: Bibliographical footnotes.