TY  - RPRT
TI  - Land use and land cover and associated maps for Baltimore, Maryland, Virginia, Pennsylvania, and West Virginia (Pa. and W. Va. portions only)
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1977
DO  - 10.3133/ofr77114
UR  - https://pubs.usgs.gov/publication/ofr77114
ID  - ofr77114
ER  -