TY  - RPRT
TI  - Uranium and other trace elements in Devonian and Mississippian black shales in the central midcontinent area
AU  - Edwin R. Landis
PY  - 1962
DO  - 10.3133/b1107e
UR  - https://pubs.usgs.gov/publication/b1107E
ID  - b1107E
ER  -