L'Éradication de la polio: Salgado, Sebastiao.: 9782020623407: Amazon.com: Books
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First polio outbreak in 30 years declared in Mozambique | UN News
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UNICEF and Partner Rotary Double Down In The Fight Against Polio | UNICEF USA
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Historia de la Poliomielitis | Rotary E-Club Puerto Rico y Las Americas
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File:Polio sequelle.jpg - Wikimedia Commons
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Jonas Salk and the Vaccine That Defeated Polio | OpenMind
Giornata Mondiale della Polio: lotta alla poliomielite - Focus.it
Información sobre la polio en los Estados Unidos | Department of Public Health | City of Philadelphia
