TY  - RPRT
TI  - Land use change map, 1970-1972, Washington urban area, D.C., Maryland, and Virginia
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1975
DO  - 10.3133/i858d
UR  - https://pubs.usgs.gov/publication/i858D
ID  - i858D
ER  -