TY  - RPRT
TI  - Potential-Field Computer Programs, Databases, and Maps
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1997
DO  - 10.3133/fs23895
UR  - https://pubs.usgs.gov/publication/fs23895
ID  - fs23895
ER  -