Infected areas as at 14 March 1991 = Zones infectées au 14 mars 1991

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Citation
World Health Organization. (1991). Infected areas as at 14 March 1991 = Zones infectées au 14 mars 1991. Weekly Epidemiological Record = Relevé épidémiologique hebdomadaire, 66 (11), 79 - 80. https://apps.who.int/iris/handle/10665/227947
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Weekly Epidemiological Record = Relevé épidémiologique hebdomadaire, 66 (11): 79 - 80Language
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