@misc{indiciae858c8d8d8b7b, title = {Conjoint use of hydraulic head and groundwater age data to detect hydrogeologic barriers}, author = {Sarah K. Marshall and Peter G. Cook and Leonard F. Konikow and Craig T. Simmons and Shawan Dogramaci}, year = {2020}, doi = {10.1007/s10040-019-02095-9}, url = {https://pubs.usgs.gov/publication/70237952}, note = {Source identifier: 70237952} }