TY  - RPRT
TI  - Organic geochemical studies of the transformation of gymnospermous xylem during peatification and coalification to subbituminous coal
AU  - Patrick G. Hatcher
AU  - H. E. Lerch
AU  - T.V. Verheyen
PY  - 1990
DO  - 10.1016/0166-5162(89)90090-6
UR  - https://pubs.usgs.gov/publication/70016453
ID  - 70016453
ER  -