TY  - RPRT
TI  - Whole-coal versus ash basis in coal geochemistry: a mathematical approach to consistent interpretations
AU  - Nicholas J. Geboy
AU  - Mark A. Engle
AU  - James C. Hower
PY  - 2013
DO  - 10.1016/j.coal.2013.02.008
UR  - https://pubs.usgs.gov/publication/70043515
ID  - 70043515
ER  -