TY  - RPRT
TI  - Depletion of 13C in Cretaceous marine organic matter: Source, diagenetic, or environmental sigal?
AU  - Walter E. Dean
AU  - Michael A. Arthur
AU  - George E. Claypool
PY  - 1986
DO  - 10.1016/0025-3227(86)90092-7
UR  - https://pubs.usgs.gov/publication/70014995
ID  - 70014995
ER  -