TY  - RPRT
TI  - U.S. Geological Survey-Missouri Geological Survey symposium; Mineral-resource potential of the Midcontinent; program and abstracts, St. Louis, Missouri, April 11-12, 1989
AU  - Martin B. Goldhaber
PY  - 1990
DO  - 10.3133/cir1043
UR  - https://pubs.usgs.gov/publication/cir1043
ID  - cir1043
ER  -