TY  - RPRT
TI  - The Middle Ordovician Knox unconformity in the Black Warrior Basin
AU  - Gary S. Dwyer
AU  - John E. Repetski
PY  - 2012
DO  - 10.1306/13331498m983499
UR  - https://pubs.usgs.gov/publication/70045423
ID  - 70045423
ER  -