TY  - RPRT
TI  - Rare-earth metal prices in the USA ca. 1960 to 1994
AU  - J.B. Hedrick
PY  - 1997
DO  - 10.1016/s0925-8388(96)02532-7
UR  - https://pubs.usgs.gov/publication/70019978
ID  - 70019978
ER  -