TY - RPRT TI - Spectrographic analyses of insoluble-residue samples, Harrison 1 degree x 2 degrees quadrangle, Missouri and Arkansas : drill holes nos. 45, 46, 47, 48 and 49 AU - Barbara Chazin AU - M. S. Erickson PY - 1988 DO - 10.3133/ofr88446 UR - https://pubs.usgs.gov/publication/ofr88446 ID - ofr88446 ER -