Tonsteins
Subtitle: altered volcanic ash layers in coal-bearing sequences
By: Bruce F. Bohor and Don M. Triplehorn.
Contributors: Triplehorn, D. M.
Series: Special paper ;; 285; Special papers (Geological Society of America) ;; 285.
Publisher: Geological Society of America
Published: 1993
Place of publication: Boulder, Colo
Language: eng
Number of pages: 44
Subjects: Tonsteins.
Notes: Includes bibliographical references (p. 40-44).