TY  - RPRT
TI  - Stratigraphy and conodont biostratigraphy of the uppermost Carboniferous and Lower Permian from the North American Midcontinent
AU  - Darwin R. Boardman
AU  - Bruce R. Wardlaw
AU  - Merlynd K. Nestell
PY  - 2009
UR  - https://pubs.usgs.gov/publication/70003457
ID  - 70003457
ER  -