@misc{indiciae75c876979e04, title = {Construction of a groundwater-flow model for the Big Sioux Aquifer using airborne electromagnetic methods, Sioux Falls, South Dakota}, author = {Joshua F. Valder and Gregory C. Delzer and Janet M. Carter and Bruce D. Smith and David V. Smith}, year = {2016}, doi = {10.3133/fs20163075}, url = {https://pubs.usgs.gov/publication/fs20163075}, note = {Source identifier: fs20163075} }