@misc{indiciae369981a0a815, title = {A search for aquifers of sand and gravel by electrical-resistivity methods in north-central New Castle County, Delaware}, author = {H. Cecil Spicer and Richard A. McCullough and Frederick K. Mack}, year = {1955}, doi = {10.3133/ofr55174}, url = {https://pubs.usgs.gov/publication/ofr55174}, note = {Source identifier: ofr55174} }