TY - RPRT TI - Mines, prospects, and occurrences of metallic minerals and barite, Springfield 1° by 2° Quadrangle, Missouri AU - H. M. Wharton PY - 1987 DO - 10.3133/mf1830c UR - https://pubs.usgs.gov/publication/mf1830C ID - mf1830C ER -