TY  - RPRT
TI  - Geology of the Argillite quadrangle, Kentucky
AU  - Richard A. Sheppard
AU  - John C. Ferm
PY  - 1962
DO  - 10.3133/gq175
UR  - https://pubs.usgs.gov/publication/gq175
ID  - gq175
ER  -