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Thomas, David B ,  McCormack, William M ,  Arita, Isao ,  Khan, Malik Muzaffer ,  Islam, Shafiqul ,  Mack, Thomas M ,  World Health Organization. Smallpox Eradication Unit ,  [Endemic smallpox in a rural area / by David B. Thomas, William M. McCormack, Isao Arita, Muzaffer Khan, Shafiqul Islam and Thomas M. Mack]

Arita, Isao ,  Henderson, Donald A ,  World Health Organization. Global Commission for the Certification of Smallpox Eradication in Central Africa ,  [Les virus monkeypox et whitepox en Afrique occidentale et centrale / par I. Arita et D.A. Henderson]

Arita, Isao ,  Henderson, Donald A ,  World Health Organization. Global Commission for the Certification of Smallpox Eradication in Central Africa ,  [Les virus monkeypox et whitepox en Afrique occidentale et centrale / par I. Arita et D.A. Henderson]

Thomas, David B ,  McCormack, William M ,  Arita, Isao ,  Khan, Malik Muzaffer ,  Islam, Shafiqul ,  Mack, Thomas M ,  World Health Organization. Smallpox Eradication Unit ,  [Endemic smallpox in a rural area / by David B. Thomas, William M. McCormack, Isao Arita, Muzaffer Khan, Shafiqul Islam and Thomas M. Mack]