TY  - RPRT
TI  - Bouguer gravity, aeromagnetic, and generalized geologic maps of part of the Black Hills of South Dakota and Wyoming
AU  - M. D. Kleinkopf
AU  - J. A. Redden
PY  - 1975
DO  - 10.3133/gp903
UR  - https://pubs.usgs.gov/publication/gp903
ID  - gp903
ER  -