TY  - RPRT
TI  - Land use and land cover, 1973, Richmond, Virginia; Maryland
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1981
DO  - 10.3133/l140
UR  - https://pubs.usgs.gov/publication/l140
ID  - l140
ER  -