TY  - RPRT
TI  - Clastic rocks associated with the Midcontinent rift system in Iowa
AU  - Raymond R. Anderson
AU  - Robert M. McKay
PY  - 1997
DO  - 10.3133/b1989i
UR  - https://pubs.usgs.gov/publication/b1989I
ID  - b1989I
ER  -