1990. Occupational health for the 1990s: Proceedings of a WHO symposium. Amsterdam 13-16 March 1990. Copenhagen: WHO.
Citace podle APA (7th ed.)(1990). Occupational health for the 1990s: Proceedings of a WHO symposium. Amsterdam 13-16 March 1990. WHO.
Citace podle Chicago (17th ed.)Occupational Health for the 1990s: Proceedings of a WHO Symposium. Amsterdam 13-16 March 1990. Copenhagen: WHO, 1990.
Citace podle MLA (9th ed.)Occupational Health for the 1990s: Proceedings of a WHO Symposium. Amsterdam 13-16 March 1990. WHO, 1990.
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