TY  - RPRT
TI  - Forum on Geologic mapping applications in the Washington-Baltimore urban area; proceedings; Reston, Virginia, April 23, 1997
AU  - J. Wright Horton
AU  - Emery T. Cleaves
PY  - 1997
DO  - 10.3133/cir1148
UR  - https://pubs.usgs.gov/publication/cir1148
ID  - cir1148
ER  -