Não informado. Soil and land-use surveys. University of the West Indies, Department of Soil Science.
Čikaški stil citiranja (17. izdanje)Não informado. Soil and Land-use Surveys. St. Augustine, Trinidad e Tobago: University of the West Indies, Department of Soil Science.
MLA način citiranja (8. izdanje)Não informado. Soil and Land-use Surveys. University of the West Indies, Department of Soil Science.
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