TY  - RPRT
TI  - Thickness of overburden map of Fairfax County, Virginia
AU  - A.J. Froelich
AU  - T.L. Heironimus
PY  - 1977
DO  - 10.3133/ofr77797
UR  - https://pubs.usgs.gov/publication/ofr77797
ID  - ofr77797
ER  -