Drying and preheating coals before coking /
[by] H. W. Jackman [and] R. J. Helfinstine.
APA Citation
Jackman, H. Wesley., Helfinstine, R. John. (1968). Drying and preheating coals before coking. Urbana: Illinois State Geological Survey.
MLA Citation
Jackman, Harold Wesley, 1901-, and Roy John Helfinstine. Drying And Preheating Coals Before Coking. Urbana: Illinois State Geological Survey, 1968.
Warning: These citations may not always be complete (especially for serials).