TY  - RPRT
TI  - Hypogene caves of the central Appalachian Shenandoah Valley in Virginia
AU  - Daniel H. Doctor
AU  - Wil Orndorff
PY  - 2017
DO  - 10.1007/978-3-319-53348-3_46
UR  - https://pubs.usgs.gov/publication/70191112
ID  - 70191112
ER  -