FAO. (1991). FAO soils bulletin N.58: Guidelines: land evalution for extensive grazing. Rome: FAO.
Trích dẫn kiểu ChicagoFAO. FAO Soils Bulletin N.58: Guidelines: Land Evalution for Extensive Grazing. Rome: FAO, 1991.
MLA citiranjeFAO. FAO Soils Bulletin N.58: Guidelines: Land Evalution for Extensive Grazing. Rome: FAO, 1991.
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