Fractional precipitation of rare earths with phosphoric acid / 
by M. K. Carron...[et al.]. 
 -- Washington :   United States Government Printing Office,   1958 
 - P. 253-275. -- 
 (Geological Survey Bulletin  ;  1036-N).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geoquímica
<br/><br/><label>Universal Decimal Class. No.: </label>550.4