TY  - RPRT
TI  - The Conterminous United States Mineral-Resource Assessment Program— Background information to accompany folio of geologic and mineral-resources maps of the Rolla 1° x 2° quadrangle, Missouri
AU  - Walden P. Pratt
PY  - 1991
DO  - 10.3133/cir1068
UR  - https://pubs.usgs.gov/publication/cir1068
ID  - cir1068
ER  -