TY  - RPRT
TI  - Trace-element budgets in the Ohio/Sunbury shales of Kentucky: Constraints on ocean circulation and primary productivity in the Devonian-Mississippian Appalachian Basin
AU  - R.B. Perkins
AU  - D.Z. Piper
AU  - C.E. Mason
PY  - 2008
DO  - 10.1016/j.palaeo.2008.04.012
UR  - https://pubs.usgs.gov/publication/70000341
ID  - 70000341
ER  -