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Desmemoria y olvido : la economía arrocera en la cuenca del Guayas, 1900 - 1950
Espinosa, Roque, (2014)
Survey for the development of the Guayas River Basin of Ecuador : an integrated natural resource evaluation
(1964)
Agrarian reform in Ecuador's Guayas River Basin
Zuvekas jr., Clarence, (1976)