TY  - RPRT
TI  - Mineralogy of ash of some American coals: Variations with temperature and source
AU  - R.S. Mitchell
AU  - H.J. Gluskoter
PY  - 1976
DO  - 10.1016/0016-2361(76)90001-6
UR  - https://pubs.usgs.gov/publication/70010933
ID  - 70010933
ER  -