Petrographic comparison of Pliocene and Pleistocene volcanic ash from western Kansas - Swineford, Ada, 1917-; Frye, John Chapman, 1912- (Lawrence, Kan. : [s.n., 1946)
Title page lacking.
"1946 Reports of studies, part 1, April 15, 1946."
With : Geology and ground-water resources of Grant, Haskell, and Stevens Counties, Kansas, 1946. Bound together subsequent to publication.
"References": p. 30-32.
Keywords: Volcanic ash, tuff, etc; Petrology -- Kansas