Kubach, Isa <br/><br/>
Y, La, and the lanthanoids  minerals ( silicates). Deposits. Mineral index  Sc, Y, La - Lu : Rare earth elements : system number 39/ 
Isa Kubach 
 - 8., völlig neu bearb. Aufl. 
 -  1984, 1984 
 - XV, 413 S.  graph. Darst. 
 - Töpper, Wolfgang .
<br/><br/><label>ISBN: </label>3540935053 0387935053 
<br/><br/><label>Universal Decimal Class. No.: </label>546