TY  - RPRT
TI  - delta 15N and non-carbonate delta 13C values for two petroleum source rock reference materials and a marine sediment reference material
AU  - Kristin O. Dennen
AU  - Craig A. Johnson
AU  - Marshall L. Otter
AU  - Steven R. Silva
AU  - Gregory A. Wandless
PY  - 2006
DO  - 10.3133/ofr20061071
UR  - https://pubs.usgs.gov/publication/ofr20061071
ID  - ofr20061071
ER  -