TY  - RPRT
TI  - Preliminary geologic map of the Annandale Quadrangle, Virginia
AU  - A. C. Huffman
AU  - A.J. Froelich
AU  - Lucy M. Force
PY  - 1975
DO  - 10.3133/ofr75254
UR  - https://pubs.usgs.gov/publication/ofr75254
ID  - ofr75254
ER  -