TY  - RPRT
TI  - The effects of volcanic ash on the maceral and chemical composition of the C coal bed, Emery Coal Field, Utah
AU  - Sharon S. Crowley
AU  - R.W. Stanton
AU  - Thomas A. Ryer
PY  - 1989
DO  - 10.1016/0146-6380(89)90059-4
UR  - https://pubs.usgs.gov/publication/70015260
ID  - 70015260
ER  -