@misc{indiciae295b66549e52, title = {Potential-Field Computer Programs, Databases, and Maps}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1997}, doi = {10.3133/fs23895}, url = {https://pubs.usgs.gov/publication/fs23895}, note = {Source identifier: fs23895} }