The Morro do Ferro thorium and rare-earth ore deposit, Poços de Caldas district, Brazil /
Wedow, Helmuth,1917-
U.S. Atomic Energy Commission.
Brazil.Commissão Nacional de Energia Nuclear.
Washington: U.S. Govt. Print. Off.,
1967.
"Prepared on behalf of the U. S. Atomic Energy Commission in cooperation with the Commissão Nacional de Energia Nuclear, Brazil."
Bibliography: p. 34.
Rare earth metals
Thorium ores
Ore deposits