TY  - RPRT
TI  - Conodont color alteration; an index to organic metamorphism
AU  - Anita G. Epstein
AU  - Jack Burton Epstein
AU  - Leonard Dorreen Harris
PY  - 1977
DO  - 10.3133/pp995
UR  - https://pubs.usgs.gov/publication/pp995
ID  - pp995
ER  -