TY  - RPRT
TI  - Aeromagnetic map of the Custer-Rapid City area, southwestern South Dakota
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1969
DO  - 10.3133/gp670
UR  - https://pubs.usgs.gov/publication/gp670
ID  - gp670
ER  -