Elwell, W. T.  <br/><br/>
Analysis of the new metals :   titanium, zirconium, hafnium, niobium, tantalum, tungsten and their alloys 

 - Oxford :   Pergamon Press,   1966. 
 - 275 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>TITANIO<br/>ZIRCONIO<br/>HAFNIO<br/>NIOBIO<br/>TANTALIO<br/>TUNGSTENO<br/>ALEACIONES
<br/><br/><label>Universal Decimal Class. No.: </label>669.29