Gschneidner, Karl A, ed <br/><br/>
Handbook on the Physics and Chemistry of rare earths v. 3: non-metallic compounds-1, v. 1:metals; v. 2:alloys and intemetallics, v. 4:non metallic compounds ii 

 - New York  North-Holland  1979 
 - xiii, 664 p. 
<br/><br/><label>Dewey Class. No.: </label>546.4 G929H