TY  - GEN
AU  - Spedding, F. H.
AU  - Daane, A. H.
AU  - 
TI  - RARE EARTHS
U1  - 546.4 
PY  - 1961///
CY  - N. Y.
PB  - Wiley
KW  - Earths, Rare. Congresses
KW  - Rare Earth Metals. Congresses
ER  -