TY  - RPRT
TI  - Focus areas for data acquisition for potential domestic sources of critical minerals—Rare earth elements
AU  - Jane M. Hammarstrom
AU  - Connie L. Dicken
PY  - 2019
DO  - 10.3133/ofr20191023a
UR  - https://pubs.usgs.gov/publication/ofr20191023A
ID  - ofr20191023A
ER  -