TY  - RPRT
TI  - Relative sea-level changes during Middle Ordovician through Mississippian deposition in the Iowa area, North American craton
AU  - B.J. Witzke
AU  - B.J. Bunker
PY  - 1996
UR  - https://pubs.usgs.gov/publication/70017837
ID  - 70017837
ER  -