The rare earths / 
edited by F.H. Spedding & A.H. Daane. 
 - Huntington, New York :  Krieger,  1971. 
 - xi, 641 p. :  ill. 
<br/><br/> Original edition, 1961. Reprint 1971. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rare earths--Congresses.<br/>Rare earth metals--Congresses.