TY  - RPRT
TI  - Analytical results of insoluble-residue samples from the Paducah 1 degree by 2 degrees Quadrangle, Missouri, Illinois, and Kentucky; drill hole Nos. I30-I70
AU  - John H. Bullock
AU  - H. W. Folger
AU  - J. D. Sharkey
AU  - C. D. Taylor
PY  - 1991
DO  - 10.3133/ofr91387a
UR  - https://pubs.usgs.gov/publication/ofr91387A
ID  - ofr91387A
ER  -