TY  - RPRT
TI  - Chemistry and palynology of carbon seams and associated rocks from the Witwatersrand goldfields, South Africa
AU  - L.B. Ebert
AU  - E. I. Robbins
AU  - K.D. Rose
AU  - R.V. Kastrup
AU  - J.C. Scanlon
AU  - L.A. Gebhard
AU  - A.R. Garcia
PY  - 1990
DO  - 10.1016/0169-1368(90)90045-o
UR  - https://pubs.usgs.gov/publication/70015993
ID  - 70015993
ER  -