Barrezueta-Unda, S. (2019). Properties of several soils cultivated with cocoa in the province of El Oro, Ecuador. Universidad Autónoma de Tamaulipas.
Lua i Stíl Chicago (17ú heag.)Barrezueta-Unda, Salomón. Properties of Several Soils Cultivated with Cocoa in the Province of El Oro, Ecuador. Universidad Autónoma de Tamaulipas, 2019.
Lua MLA (8ú heag.)Barrezueta-Unda, Salomón. Properties of Several Soils Cultivated with Cocoa in the Province of El Oro, Ecuador. Universidad Autónoma de Tamaulipas, 2019.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
