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WHO Consultation on Worldwide Certification of Smallpox Eradication (1977 : Geneva, Switzerland) ,  World Health Organization ,  [Rapport de la Consultation sur la certification mondiale de l' éradication de la variole qui s'est tenue à Genève du 11 au 13 octobre 1977]

Brilliant, Lawrence B ,  Khodakevich, L. N ,  World Health Organization ,  [The certification of smallpox eradication in countries without recent reported endemic transmission / by L.B. Brilliant and L.N. Khodakevich]

Fenner, Frank ,  Breman, Joel G ,  World Health Organization ,  [Report on a visit to the People's Republic of China to consider matters relating to the certification of smallpox eradication, 14-30 July 1979 / F. Fenner and J.G. Breman]

Coordination Meeting for Smallpox Eradication (3rd : 1978 : Nairobi, Kenya) ,  World Health Organization ,  [Recommendations of the third Coordination Meeting for Smallpox Eradication, Nairobi, 17-19 April 1978]