TY  - RPRT
TI  - Analytical results of insoluble-residue samples from the Paducah 1 degree x 2 degrees Quadrangle, Missouri, Illinois, and Kentucky, drill hole Nos. P1-P20
AU  - John H. Bullock
AU  - H. W. Folger
AU  - J. D. Sharkey
AU  - J.R. Gillison
AU  - C. D. Taylor
PY  - 1991
DO  - 10.3133/ofr91378b
UR  - https://pubs.usgs.gov/publication/ofr91378B
ID  - ofr91378B
ER  -