FAO. (1989). FAO statistical development series N.3: Sampling methods for agricultural surveys. Rome: FAO.
Trích dẫn kiểu ChicagoFAO. FAO Statistical Development Series N.3: Sampling Methods for Agricultural Surveys. Rome: FAO, 1989.
MLA citiranjeFAO. FAO Statistical Development Series N.3: Sampling Methods for Agricultural Surveys. Rome: FAO, 1989.
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