TY  - RPRT
TI  - Preliminary stratigraphic cross sections showing radioactive zones in the Devonian black shales in the central part of the Appalachian Basin
AU  - John B. Roen
AU  - Laure G. Wallace
AU  - Wallace De Witt
PY  - 1978
DO  - 10.3133/oc87
UR  - https://pubs.usgs.gov/publication/oc87
ID  - oc87
ER  -