Potash shales of Illinois
By: [by S.W. Parr and M.M. Austin]. Geology, distribution, and occurrence of the potash-bearing shale of Union County / [by Frank Krey]. Finely-ground shale as a source of potassium for soil improvement / [by Robert Stewart].
Contributors: Krey, Frank.; Austin, M. M. 1892-; Stewart, Robert, 1877-
Series: Bulletin (University of Illinois (Urbana-Champaign campus). Agricultural Experiment Station) -- no. 232; Bulletin (University of Illinois (Urbana-Champaign campus). Agricultural Experiment Station) -- no. 232.
Publisher: University of Illinois Agricultural Experiment Station
Published: 1921
Place of publication: Urbana, Ill
Language: eng
Number of pages: 252
Subjects: Shale -- Illinois.; Potash deposits -- Illinois.
Other titles: Geology, distribution, and occurrence in Union County.