FAO. (1991). World soil resources reports N.71.4: Agro-ecological land resources assessment for agricultural development planning. Rome: FAO.
Παραπομπή Chicago StyleFAO. World Soil Resources Reports N.71.4: Agro-ecological Land Resources Assessment for Agricultural Development Planning. Rome: FAO, 1991.
Παραπομπή MLAFAO. World Soil Resources Reports N.71.4: Agro-ecological Land Resources Assessment for Agricultural Development Planning. Rome: FAO, 1991.
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