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Costos de producción de la piña en la zona norte de Puerto Rico, 1948-49

Piñero, Manuel; Montalvo, Héctor B. (2010-06-04)

An economic study of family-sized farms in Puerto Rico. V, Victoria Farm Security Administration Farms, 1945-46, 1946-47

Serra, Guillermo; Piñero, Manuel (2010-05-05)

An economic study of family-sized farms in Puerto Rico: San José Farm Security Administration Project, 1943-44, 1944-45

Serra, Guillermo; Piñero, Manuel (2010-05-05)

Estudio sobre los costos para producir huevos en Puerto Rico, 1951

Piñero, Manuel; Bayrón Montalvo, Héctor (2010-06-04)

An economic study of family-sized farms in Puerto Rico II., Monserrate Farm Security Administration Farms, 1943-44, 1944-45

Serra, Guillermo; Piñero, Manuel (2010-05-05)