TY  - RPRT
TI  - Geologic map of the Marble Hill Quadrangle, Bollinger County, Missouri
AU  - D.H. Amos
PY  - 1987
DO  - 10.3133/mf1900
UR  - https://pubs.usgs.gov/publication/mf1900
ID  - mf1900
ER  -