The Cretaceous formation of the Black hills as indicated by the fossil plants
By: by Lester F. Ward, with the collaboration of Walter P. Jenny, Wm. M. Fontaine, and F. H. Knowlton.  Extract from the Nineteenth annual report of the [U.S. Geological] survey, 1897-98.  Part II--Papers chiefly of a theoretic nature
Contributors: Jenney, Walter P. (Walter Proctor), 1849-1921; Fontaine, William Morris, 1835-1913; Knowlton, Frank Hall, 1860-1926
Publisher: Govt. Print. Off.
Published: 1899
Place of publication: Washington
Language: eng
Number of pages: 712
Subjects: Paleobotany
Notes: Cover title.