Merkoša sitáhtat
APA-čujuhus (7. p.)
(2000). Air quality guidelines for Europe (Second edition.). World Health Organization Regional Office for Europe.
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Chicago-čujuhus (17. p.)
Air Quality Guidelines for Europe. Second edition. Copenhagen, Denmark: World Health Organization Regional Office for Europe, 2000.
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MLA-čujuhus (9. p.)
Air Quality Guidelines for Europe. Second edition. World Health Organization Regional Office for Europe, 2000.
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