Geer, Max R.
Predicted results of cleaning Appalachian coals at low density for sulfur reduction - Washington Bureau of Mines 1968 - 20 p. - RI 7098 .
sulfur
coal
55
Predicted results of cleaning Appalachian coals at low density for sulfur reduction - Washington Bureau of Mines 1968 - 20 p. - RI 7098 .
sulfur
coal
55