Survey metallic and non-metallic minerals, phase 2 :  republic of Ecuador :  Exploration for metallic minerals in southern Ecuador (operation N 8, Loja-El Oro) systematic geochemical exploration and geological reconnaissance 

 - New York :  United nations development programme,  1972 
 - 46 p: :  carte, 2 cartes h. t., graph., tab. 
 - Technical report, 13 .
<br/><br/>bibliogr. p. 45-46, 2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Géologie économique<br/>Géochimie<br/>Exploration<br/>Minéral
<br/><br/><label>Subjects--Index Terms: </label>Equateur  Loja Equateur  El Oro