Availability of rare-earth, yttrium, and related thorium oxides--market economy countries :a minerals availability appraisal

Author:	Anstett, T. F.
Year:	1986
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I28.27:9111
Series:	Information circular / Bureau of Mines ;
Report Number:	9111
Subjects:	Thorium ores
	Yttrium earths
	Rare earths
Link:	https://hdl.handle.net/2027/mdp.39015078464867