TY  - RPRT
TI  - Spectrographic analyses of insoluble-residue samples, Joplin 1 degree x 2 degrees quadrangle, Kansas and Missouri; drill hole Nos. 7, 8, and 9
AU  - John H. Bullock
AU  - Helen A. Whitney
PY  - 1989
DO  - 10.3133/ofr89120
UR  - https://pubs.usgs.gov/publication/ofr89120
ID  - ofr89120
ER  -