TY  - RPRT
TI  - Re–Os age for the Lower–Middle Pennsylvanian Boundary and comparison with associated palynoflora
AU  - Nicholas J. Geboy
AU  - G.R Tripathy
AU  - Leslie F. Ruppert
AU  - C.F. Eble
AU  - B.M. Blake
AU  - J. L. Hannah
AU  - H. J. Stein
PY  - 2015
DO  - 10.1016/j.coal.2015.01.002
UR  - https://pubs.usgs.gov/publication/70164523
ID  - 70164523
ER  -