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Aspectos geográficos del Estado Sucre
Vila i Comaposada, Marc-Aureli, (1965)
The Haitian potential : research and resources of Haiti
Rubin, Vera D., (1975)
The economics of Latin America : Development problems in perspective
Farley, Raw, (1972)
Social Welfare and Land Tenure in the Agrarian Reform Program of Venezuela
Hill, George W., (1952)
The Agrarian Reform in Costa Rica
Hill, George W., (1964)
Un area rural en desarrollo : sus problemas económicos y sociales, Costa Rica