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Citace podle APA (7th ed.)(1992). Air quality guidelines in the european region: Report on a third workshop. Paris 2-5 July 1991. WHO.
Citace podle Chicago (17th ed.)Air Quality Guidelines in the European Region: Report on a Third Workshop. Paris 2-5 July 1991. Copenhagen: WHO, 1992.
Citace podle MLA (9th ed.)Air Quality Guidelines in the European Region: Report on a Third Workshop. Paris 2-5 July 1991. WHO, 1992.
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