TY  - RPRT
TI  - Preliminary geologic map of the Spring Valley 30' x 60' quadrangle, Missouri
AU  - R. C. Orndorff
AU  - R.W. Harrison
PY  - 1997
DO  - 10.3133/ofr97434
UR  - https://pubs.usgs.gov/publication/ofr97434
ID  - ofr97434
ER  -