TY - RPRT TI - Geologic, geochemical, and geophysical maps of the Rock Pile Mountain Wilderness study area, Madison County, Missouri AU - W. P. Pratt AU - R. L. Erickson PY - 1982 DO - 10.3133/mf1339a UR - https://pubs.usgs.gov/publication/mf1339A ID - mf1339A ER -