• publisher: Urbana : Illinois State Geological Survey
  • creator: Jackman, Harold Wesley, 1901- Helfinstine, Roy John, joint author
  • contributor: Helfinstine, Roy John, joint author.
  • Keyword: Coal Drying.
  • years: 1970.
  • pages: 18 p. :
  • class: QE105
  • notes: Cover title.
  • download: pdf file