TY  - RPRT
TI  - Spectrographic analyses of insoluble-residue samples Joplin 1 degree x 2 degrees Quadrangle, Missouri and Kansas; drill hole Nos. 106, 107 and 108
AU  - J. H. Bullock
AU  - H. W. Folger
PY  - 1990
DO  - 10.3133/ofr904
UR  - https://pubs.usgs.gov/publication/ofr904
ID  - ofr904
ER  -