FAO. (1971). FAO agricultural development paper; N92: Tillage and seeding practices and machines for crop production in semiarid areas. Rome: FAO.
Chicago-tyylinen lähdeviittausFAO. FAO Agricultural Development Paper; N92: Tillage and Seeding Practices and Machines for Crop Production in Semiarid Areas. Rome: FAO, 1971.
MLA-viiteFAO. FAO Agricultural Development Paper; N92: Tillage and Seeding Practices and Machines for Crop Production in Semiarid Areas. Rome: FAO, 1971.
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