TY  - RPRT
TI  - Concentration of some platinum-group metals in coal
AU  - R. B. Finkelman
AU  - P. J. Aruscavage
PY  - 1981
DO  - 10.1016/0166-5162(81)90006-9
UR  - https://pubs.usgs.gov/publication/70012081
ID  - 70012081
ER  -