TY  - RPRT
TI  - Land use and land cover and associated maps for Richmond, Virginia; Maryland
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1977
DO  - 10.3133/ofr7785
UR  - https://pubs.usgs.gov/publication/ofr7785
ID  - ofr7785
ER  -