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Чикаго-гийн эшлэл (17 дахь хэвлэлт)World Health Organization. Regional Office for Europe ба Inc ebrary. Health and the Environment in Europe: Progress Assesment. Copenhagen: WHO Regional Office for Europe, 2010.
MLA -ийн эшлэл (9 дэх хэвлэлт)World Health Organization. Regional Office for Europe ба Inc ebrary. Health and the Environment in Europe: Progress Assesment. WHO Regional Office for Europe, 2010.
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