1988. Four decades of achievement: Highlights of the work of WHO. Geneva: WHO.
Citace podle APA (7th ed.)(1988). Four decades of achievement: Highlights of the work of WHO. WHO.
Citace podle Chicago (17th ed.)Four Decades of Achievement: Highlights of the Work of WHO. Geneva: WHO, 1988.
Citace podle MLA (9th ed.)Four Decades of Achievement: Highlights of the Work of WHO. WHO, 1988.
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