World Health Organization. (1989). WORLD health organization: : publications catalogue 1948- 1989. World Health Organization.
Style de citation Chicago (17e éd.)World Health Organization. WORLD Health Organization: : Publications Catalogue 1948- 1989. World Health Organization, 1989.
Style de citation MLA (9e éd.)World Health Organization. WORLD Health Organization: : Publications Catalogue 1948- 1989. World Health Organization, 1989.
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