@misc{indiciaef32f92525870, title = {Land use and land cover, 1973, Salisbury, Maryland; Delaware; New Jersey; Virginia}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1979}, doi = {10.3133/l65}, url = {https://pubs.usgs.gov/publication/l65}, note = {Source identifier: l65} }