TY  - RPRT
TI  - The group separation of the rare-earth elements and yttrium from geologic materials by cation-exchange chromatography
AU  - J.G. Crock
AU  - F.E. Lichte
AU  - T.R. Wildeman
PY  - 1984
DO  - 10.1016/0009-2541(84)90121-9
UR  - https://pubs.usgs.gov/publication/70014010
ID  - 70014010
ER  -