TY  - RPRT
TI  - Characteristics of radioactive carbonaceous and bituminous shales
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1950
DO  - 10.3133/tei78
UR  - https://pubs.usgs.gov/publication/tei78
ID  - tei78
ER  -