Smallpox = Variole

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Citation
World Health Organization. (1927). Smallpox = Variole. Weekly Epidemiological Record = Relevé épidémiologique hebdomadaire, 02 (47), 4 - 5. http://www.who.int/iris/handle/10665/233258
Journal
Weekly Epidemiological Record = Relevé épidémiologique hebdomadaire, 02 (47): 4 - 5Collections
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