TY  - RPRT
TI  - Land cover map from Landsat, 1973, with census tracts, Washington urban area, D.C., MD, and VA
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1978
DO  - 10.3133/i858f
UR  - https://pubs.usgs.gov/publication/i858F
ID  - i858F
ER  -