@misc{indiciae192efe32ce84, title = {Evaluation of surface geophysical methods for collection of hydrogeologic data in the Nebraska Sand Hills region}, author = {M. J. Ellis and R.A. Hiergesell}, year = {1985}, doi = {10.3133/wri854195}, url = {https://pubs.usgs.gov/publication/wri854195}, note = {Source identifier: wri854195} }