Textures and conditions of formation of Middle Pennsylvanian coal balls, central United States
By: Thomas W. Perkins.
Series: The University of Kansas paleontological contributions : Paper ; 82; University of Kansas paleontological contributions.; 82.
Publisher: University of Kansas Paleontological Institute
Published: 1976
Place of publication: Lawrence
Language: eng
Number of pages: 13
Subjects: Coal balls -- Kansas.; Coal balls -- Oklahoma.; Paleobotany -- Pennsylvanian.
Notes: Bibliography: p. 13.
Cover title.