TY  - RPRT
TI  - Modes of occurrence of trace elements in samples from a coal cleaning plant
AU  - Curtis A. Palmer
AU  - Allan Kolker
AU  - Robert B. Finkelman
AU  - K.C. Kolb
AU  - Stanley J. Mroczkowski
AU  - S.S. Crowley
AU  - H. E. Belkin
AU  - J. H. Bullock
AU  - J. M. Motooka
PY  - 1997
DO  - 10.3133/ofr97732
UR  - https://pubs.usgs.gov/publication/ofr97732
ID  - ofr97732
ER  -