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Чикаго-гийн эшлэл (17 дахь хэвлэлт)Organisation for Economic Co-operation and Development. Examens Environnementaux De L'OCDE. Paris, [France]: Organisation for Economic Co-operation and Development, 2015.
MLA -ийн эшлэл (9 дэх хэвлэлт)Organisation for Economic Co-operation and Development. Examens Environnementaux De L'OCDE. Organisation for Economic Co-operation and Development, 2015.
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