• 2 Journals, Magazines, Newspapers

• 2 Agriculture
• 1 Christianity
• 1 Economic aspects
• 1 Economic conditions
• 1 Land reform
• 1 Religious aspects
• 1 Rural conditions

• 1 Academia de Humanismo Cristiano (Santiago, Chile). Grupo de Investigaciones Agrarias
• 1 Instituto de Estudios Agro-sociales (Spain)
• 1 Instituto de Relaciones Agrarias (Spain)

• 1 Chile
• 1 Spain

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