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World Health Organization. Smallpox Eradication Unit ,  [World smallpox situation, 1967-1977 / Smallpox Eradication Unit, WHO, HQ]

Kriz, B ,  Hatfield, R ,  World Health Organization. Smallpox Eradication Unit ,  [Nomadic population movement in south-western Somalia and its influence on the planning of smallpox surveillance / by B. Kriz and R. Hatfield]

World Health Organization. Smallpox Eradication Unit ,  [Methodology for preparation of appropriate data for the 31 countries remaining to be certified free of smallpox]

Jezek, Zdenek ,  Deria, A ,  World Health Organization. Smallpox Eradication Unit ,  [An evaluation of the effectiveness of smallpox surveillance and containment in Somalia / Z. Jezek and Abdullahi Deria]

Gromyko, A. I ,  Daramola, M ,  World Health Organization. Smallpox Eradication Unit ,  [Résultats préliminaires d' une enquête sur un cas de monkeypox au Nigéria / par A.I. Gromyko et M. Daramola]

Tulloch, Jim ,  Tarantola, Daniel J. M ,  World Health Organization. Smallpox Eradication Unit ,  [A study of smallpox transmission rate in Bangladesh / by J. Tulloch, D. Tarantola]