Abrasion hardness.

Bibliographic Details
Main Author: Jaggar, Thomas Augustus, 1871-1953
Format: Book
Language:English
Published: Honolulu : Hawaiian Volcano Research Association, 1950.
Series:Special reports (Hawaiian Volcano Observatory) ; 5.
Subjects:
Description
Physical Description:43 pages : illustrations, diagrams ; 26 cm.
Bibliography:Bibliographical footnotes.