TY  - RPRT
TI  - Chemical analysis and geochemical associations in Devonian black shale core samples from Martin County, Kentucky; Carroll and Washington counties, Ohio; Wise County, Virginia; and Overton County, Tennessee
AU  - Joel S. Leventhal
PY  - 1979
DO  - 10.3133/ofr791503
UR  - https://pubs.usgs.gov/publication/ofr791503
ID  - ofr791503
ER  -