Kubach, Isa <br/><br/>
Y, La, and the lanthanoids  minerals (excluding silicates)  Sc, Y, La - Lu : Rare earth elements : system number 39/ 
Isa Kubach  
 - 8., völlig neu bearb. Aufl. 
 -  1984, 1984 
 - XV, 248 S.  graph. Darst. 
 - Schubert, Peter .
<br/><br/><label>ISBN: </label>3540934898 0387934898 
<br/><br/><label>Universal Decimal Class. No.: </label>546+546.3