TY  - RPRT
TI  - Land use and land cover, 1972, Wilmington, Delaware; New Jersey; Pennsylvania; Maryland
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1979
DO  - 10.3133/l38
UR  - https://pubs.usgs.gov/publication/l38
ID  - l38
ER  -