Ladd, Harry Stephen   1899-1982 <br/><br/>
Eocene mollusks from Eua, Tonga / 
by Harry S. Ladd. 
 -- Washington :   United States Government Printing Office,   1970 
 - 12 p., [5] h. de lam. -- 
 (Geological Survey Professional Paper  ;  640-C).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Moluscos fósiles<br/>Tonga
<br/><br/><label>Universal Decimal Class. No.: </label>564(961.2)