@misc{indiciae887b072b915a, title = {Water resources data, Maryland and Delaware, water year 1997, volume 2. ground-water data}, author = {Michael J. Smigaj and Richard W. Saffer and Roger J. Starsoneck and Judith L. Tegeler}, year = {1998}, doi = {10.3133/wdrmdde972}, url = {https://pubs.usgs.gov/publication/wdrMDDE972}, note = {Source identifier: wdrMDDE972} }