TY  - RPRT
TI  - 15N/14N variations in Cretaceous Atlantic sedimentary sequences: Implication for past changes in marine nitrogen biogeochemistry
AU  - Greg H. Rau
AU  - M.A. Arthur
AU  - Walter E. Dean
PY  - 1987
DO  - 10.1016/0012-821x(87)90201-9
UR  - https://pubs.usgs.gov/publication/70210009
ID  - 70210009
ER  -