Clark, R. J. H. <br/><br/>
The chemistry of vanadium, niobium and tantalum / 
R. J. H. Clark, D. Brown 
 - 2nd ed 
 - Oxford :  Pergamon Press,  1973 
 - xip, 622 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0080188666  cased 00801886856 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vanadium<br/>Niobium<br/>Tantalum