Geography, D. o. (2019). Principles of Land Evaluation. Obafemi Awolowo University.
Čikaški stil citiranja (17. izdanje)Geography, Department of. Principles of Land Evaluation. Obafemi Awolowo University, 2019.
MLA način citiranja (9. izdanje)Geography, Department of. Principles of Land Evaluation. Obafemi Awolowo University, 2019.
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