Sulfur reduction of Illinois coals
Subtitle: washability studies
By: R.J. Helfinstine ... [et al.].
Series: Circular / Illinois State Geological Survey -- 462; Circular (Illinois State Geological Survey) -- 462.
Publisher: State of Illinois, Dept. of Registration and Education, Illinois State Geological Survey
Published: 1971
Place of publication: Urbana, Ill
Language: eng
Number of pages: 25
Subjects: Coal; Coal washing; Sulfur content
Notes: Cover title.

Part 2 is no. 484 in the Survey's Circular series.