TY  - RPRT
TI  - Geochemistry of rare earth elements in Permian coals from the Huaibei Coalfield, China
AU  - Lingyun Zheng
AU  - Gaisheng Liu
AU  - C. L. Chou
AU  - C. Qi
AU  - Y. Zhang
PY  - 2007
DO  - 10.1016/j.jseaes.2007.06.001
UR  - https://pubs.usgs.gov/publication/70031377
ID  - 70031377
ER  -