RI032

Publication Title: 
Contributions to the study of coal: A proposed simplification of the Parr Unit coal formula, Ash-to-mineral matter correction in coal analyses, Unit coal as a basis of coal standardization as applied to Illinois coals, Studies of the graphical methods of
Publication Type: 
Report of Investigations
Author: 
Gilbert Thiessen, G.H. Cady, O.W Rees, Frank H. Reed
Year: 
1934

Ordering information for Illinois State Geological Survey publications