TY  - RPRT
TI  - Geologic map of the Piedmont in the Beltsville, Laurel, and Washington East quadrangles, Montgomery, Prince Georges, Howard, and Anne Arundel Counties, Maryland and the District of Columbia
AU  - Avery A. Drake
PY  - 1998
DO  - 10.3133/ofr98520
UR  - https://pubs.usgs.gov/publication/ofr98520
ID  - ofr98520
ER  -