@misc{indiciaefcb82a2126c0, title = {Potentiometric surface of the Inyan Kara Aquifer in the Black Hills area, South Dakota}, author = {Michael L. Strobel and Joel M. Galloway and Ghaith R. Hamade and Gregory J. Jarrell}, year = {2000}, doi = {10.3133/ha745a}, url = {https://pubs.usgs.gov/publication/ha745A}, note = {Source identifier: ha745A} }