TY  - RPRT
TI  - The origin of epigenetic graphite: Evidence from isotopes
AU  - P. L. Weis
AU  - I. Friedman
AU  - J.P. Gleason
PY  - 1981
DO  - 10.1016/0016-7037(81)90086-7
UR  - https://pubs.usgs.gov/publication/70011719
ID  - 70011719
ER  -