TY  - RPRT
TI  - Bedrock topography of west-central Iowa
AU  - R.E. Hansen
AU  - D. L. Runkle
PY  - 1984
DO  - 10.3133/ofr84731
UR  - https://pubs.usgs.gov/publication/ofr84731
ID  - ofr84731
ER  -