TY  - RPRT
TI  - Geomorphology of the Shenandoah Valley, Virginia and West Virginia, and origin of the residual ore deposits
AU  - John Tilton Hack
PY  - 1965
DO  - 10.3133/pp484
UR  - https://pubs.usgs.gov/publication/pp484
ID  - pp484
ER  -