TY  - RPRT
TI  - PYROLYSIS/GAS CHROMATOGRAPHY/MASS SPECTROMETRY OF A SERIES OF BURIED WOODS AND COALIFIED LOGS THAT INCREASE IN RANK FROM PEAT TO SUBBITUMINOUS COAL.
AU  - Patrick G. Hatcher
AU  - Harry E. Lerch
AU  - Rama K. Kotra
AU  - Vincent T. Verheyen
PY  - 1987
UR  - https://pubs.usgs.gov/publication/70015209
ID  - 70015209
ER  -