TY  - RPRT
TI  - Spectrographic analyses of insoluble-residue samples, Joplin 1 degree x 2 degrees Quadrangle, Missouri and Kansas; drill hole Nos. 49 and 51
AU  - J. H. Bullock
AU  - H. A. Whitney
PY  - 1989
DO  - 10.3133/ofr89499
UR  - https://pubs.usgs.gov/publication/ofr89499
ID  - ofr89499
ER  -