TY  - RPRT
TI  - Coal resources of Virginia
AU  - Andrew Brown
AU  - Henry L. Berryhill
AU  - Dorothy A. Taylor
AU  - James V. A. Trumbull
PY  - 1952
DO  - 10.3133/cir171
UR  - https://pubs.usgs.gov/publication/cir171
ID  - cir171
ER  -