TY  - RPRT
TI  - Radiometric ages of basement rocks in the northern Midcontinent, U.S.A.
AU  - R. F. Marvin
PY  - 1988
DO  - 10.3133/mf1835c
UR  - https://pubs.usgs.gov/publication/mf1835C
ID  - mf1835C
ER  -