TY  - RPRT
TI  - Preliminary surface materials map of Annandale Quadrangle, Virginia
AU  - Lucy M. Force
AU  - A.J. Froelich
PY  - 1975
DO  - 10.3133/ofr75255
UR  - https://pubs.usgs.gov/publication/ofr75255
ID  - ofr75255
ER  -