TY  - RPRT
TI  - Preliminary report on the clay mineralogy of the Upper Devonian Shales in the southern and middle Appalachian Basin
AU  - John W. Hosterman
AU  - Patricia J. Loferski
PY  - 1978
DO  - 10.3133/ofr781084
UR  - https://pubs.usgs.gov/publication/ofr781084
ID  - ofr781084
ER  -