Survey of metallic and non-metallic minerals, phase 2 : republic of Ecuador : Geochemical and geological investigations between Cochancay and Joyapal - New York : United nations development programme, 1972 - 17 p: : 4 cartes h. t., ann., ann. - Technical report, 10 .

bibliogr. p. 9, 4


Géochimie
Géologie économique

Equateur Cañar