TY  - RPRT
TI  - The Pennsylvanian Fire Clay tonstein of the Appalachian basin—Its distribution, biostratigraphy, and mineralogy
AU  - C. L. Rice
AU  - Harvey E. Belkin
AU  - T.W. Henry
AU  - R. E. Zartman
AU  - Michael J. Kunk
PY  - 1994
DO  - 10.1130/spe294-p87
UR  - https://pubs.usgs.gov/publication/70207647
ID  - 70207647
ER  -